38907374644 has 12 divisors (see below), whose sum is σ = 68098925664. Its totient is φ = 19450538744.

The previous prime is 38907374633. The next prime is 38907374647. The reversal of 38907374644 is 44647370983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38907374647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 759232 + ... + 808855.

It is an arithmetic number, because the mean of its divisors is an integer number (5674910472).

Almost surely, 2^38907374644 is an apocalyptic number.

It is an amenable number.

38907374644 is a deficient number, since it is larger than the sum of its proper divisors (29191551020).

38907374644 is a wasteful number, since it uses less digits than its factorization.

38907374644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574294 (or 1574292 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 38907374644 in words is "thirty-eight billion, nine hundred seven million, three hundred seventy-four thousand, six hundred forty-four".