38523004637 has 6 divisors (see below), whose sum is σ = 41714259642. Its totient is φ = 35559696432.

The previous prime is 38523004633. The next prime is 38523004643. The reversal of 38523004637 is 73640032583.

It can be written as a sum of positive squares in 3 ways, for example, as 3859639876 + 34663364761 = 62126^2 + 186181^2 .

It is not a de Polignac number, because 38523004637 - 2² = 38523004633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38523004594 and 38523004603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38523004631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113973218 + ... + 113973555.

It is an arithmetic number, because the mean of its divisors is an integer number (6952376607).

Almost surely, 2^38523004637 is an apocalyptic number.

It is an amenable number.

38523004637 is a deficient number, since it is larger than the sum of its proper divisors (3191255005).

38523004637 is a wasteful number, since it uses less digits than its factorization.

38523004637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227946799 (or 227946786 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 38523004637 in words is "thirty-eight billion, five hundred twenty-three million, four thousand, six hundred thirty-seven".