163943364 has 48 divisors (see below), whose sum is σ = 414108800. Its totient is φ = 50181120.

The previous prime is 163943341. The next prime is 163943369. The reversal of 163943364 is 463349361.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (163943369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28404 + ... + 33684.

Almost surely, 2^163943364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163943364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207054400).

163943364 is an abundant number, since it is smaller than the sum of its proper divisors (250165436).

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

163943364 is a wasteful number, since it uses less digits than its factorization.

163943364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500 (or 5498 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

The square root of 163943364 is about 12804.0370196278. The cubic root of 163943364 is about 547.3073503306.

The spelling of 163943364 in words is "one hundred sixty-three million, nine hundred forty-three thousand, three hundred sixty-four".