38487975940 has 12 divisors (see below), whose sum is σ = 80824749516. Its totient is φ = 15395190368.

The previous prime is 38487975919. The next prime is 38487975971. The reversal of 38487975940 is 4957978483.

It can be written as a sum of positive squares in 2 ways, for example, as 22377766464 + 16110209476 = 149592^2 + 126926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962199379 + ... + 962199418.

It is an arithmetic number, because the mean of its divisors is an integer number (6735395793).

Almost surely, 2^38487975940 is an apocalyptic number.

It is an amenable number.

38487975940 is an abundant number, since it is smaller than the sum of its proper divisors (42336773576).

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

38487975940 is a wasteful number, since it uses less digits than its factorization.

38487975940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924398806 (or 1924398804 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 38487975940 in words is "thirty-eight billion, four hundred eighty-seven million, nine hundred seventy-five thousand, nine hundred forty".