20160938646 has 48 divisors (see below), whose sum is σ = 46219483440. Its totient is φ = 6333603840.

The previous prime is 20160938599. The next prime is 20160938653. The reversal of 20160938646 is 64683906102.

20160938646 is a `hidden beast` number, since 2 + 0 + 1 + 609 + 38 + 6 + 4 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86715 + ... + 218726.

It is an arithmetic number, because the mean of its divisors is an integer number (962905905).

Almost surely, 2^20160938646 is an apocalyptic number.

20160938646 is an abundant number, since it is smaller than the sum of its proper divisors (26058544794).

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

20160938646 is a wasteful number, since it uses less digits than its factorization.

20160938646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305661 (or 305658 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 20160938646 in words is "twenty billion, one hundred sixty million, nine hundred thirty-eight thousand, six hundred forty-six".