163500040 has 128 divisors (see below), whose sum is σ = 420577920. Its totient is φ = 57150720.

The previous prime is 163500017. The next prime is 163500049. The reversal of 163500040 is 40005361.

It is a junction number, because it is equal to n+sod(n) for n = 163499990 and 163500017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163500049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1969839 + ... + 1969921.

It is an arithmetic number, because the mean of its divisors is an integer number (3285765).

Almost surely, 2^163500040 is an apocalyptic number.

163500040 is a gapful number since it is divisible by the number (10) 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 163500040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210288960).

163500040 is an abundant number, since it is smaller than the sum of its proper divisors (257077880).

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

163500040 is a wasteful number, since it uses less digits than its factorization.

163500040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 163500040 is about 12786.7134166681. The cubic root of 163500040 is about 546.8135750983.

The spelling of 163500040 in words is "one hundred sixty-three million, five hundred thousand, forty".