163039940 has 24 divisors (see below), whose sum is σ = 391296192. Its totient is φ = 55899360.

The previous prime is 163039937. The next prime is 163039949. The reversal of 163039940 is 49930361.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 163039940.

It is not an unprimeable number, because it can be changed into a prime (163039949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582146 + ... + 582425.

It is an arithmetic number, because the mean of its divisors is an integer number (16304008).

Almost surely, 2^163039940 is an apocalyptic number.

163039940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163039940 is an abundant number, since it is smaller than the sum of its proper divisors (228256252).

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

163039940 is a wasteful number, since it uses less digits than its factorization.

163039940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164587 (or 1164585 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 163039940 is about 12768.7094101166. The cubic root of 163039940 is about 546.3001699404.

The spelling of 163039940 in words is "one hundred sixty-three million, thirty-nine thousand, nine hundred forty".