38640265146 has 48 divisors (see below), whose sum is σ = 98767139328. Its totient is φ = 10683943200.

The previous prime is 38640265133. The next prime is 38640265201. The reversal of 38640265146 is 64156204683.

38640265146 is a `hidden beast` number, since 386 + 4 + 0 + 265 + 1 + 4 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4942365 + ... + 4950176.

It is an arithmetic number, because the mean of its divisors is an integer number (2057648736).

Almost surely, 2^38640265146 is an apocalyptic number.

38640265146 is an abundant number, since it is smaller than the sum of its proper divisors (60126874182).

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

38640265146 is a wasteful number, since it uses less digits than its factorization.

38640265146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9892587 (or 9892584 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 38640265146 in words is "thirty-eight billion, six hundred forty million, two hundred sixty-five thousand, one hundred forty-six".