38189443972 has 24 divisors (see below), whose sum is σ = 68687077536. Its totient is φ = 18568478208.

The previous prime is 38189443951. The next prime is 38189443997. The reversal of 38189443972 is 27934498183.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450013 + ... + 528100.

It is an arithmetic number, because the mean of its divisors is an integer number (2861961564).

Almost surely, 2^38189443972 is an apocalyptic number.

It is an amenable number.

38189443972 is a deficient number, since it is larger than the sum of its proper divisors (30497633564).

38189443972 is a wasteful number, since it uses less digits than its factorization.

38189443972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978387 (or 978385 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 58.

The spelling of 38189443972 in words is "thirty-eight billion, one hundred eighty-nine million, four hundred forty-three thousand, nine hundred seventy-two".