163136736 has 144 divisors (see below), whose sum is σ = 558230400. Its totient is φ = 44146944.

The previous prime is 163136731. The next prime is 163136747. The reversal of 163136736 is 637631361.

163136736 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×163136736² = 53227189265467392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 163136736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163136731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36175 + ... + 40433.

It is an arithmetic number, because the mean of its divisors is an integer number (3876600).

Almost surely, 2^163136736 is an apocalyptic number.

163136736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163136736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279115200).

163136736 is an abundant number, since it is smaller than the sum of its proper divisors (395093664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163136736 is a wasteful number, since it uses less digits than its factorization.

163136736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4301 (or 4290 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 163136736 is about 12772.4992072812. The cubic root of 163136736 is about 546.4082604486.

The spelling of 163136736 in words is "one hundred sixty-three million, one hundred thirty-six thousand, seven hundred thirty-six".