38138787636 has 48 divisors (see below), whose sum is σ = 89224396800. Its totient is φ = 12679561440.

The previous prime is 38138787623. The next prime is 38138787667. The reversal of 38138787636 is 63678783183.

It is a self number, because there is not a number n which added to its sum of digits gives 38138787636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10571745 + ... + 10575351.

It is an arithmetic number, because the mean of its divisors is an integer number (1858841600).

Almost surely, 2^38138787636 is an apocalyptic number.

It is an amenable number.

38138787636 is an abundant number, since it is smaller than the sum of its proper divisors (51085609164).

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

38138787636 is a wasteful number, since it uses less digits than its factorization.

38138787636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5684 (or 5682 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 60.

The spelling of 38138787636 in words is "thirty-eight billion, one hundred thirty-eight million, seven hundred eighty-seven thousand, six hundred thirty-six".