38251855218 has 32 divisors (see below), whose sum is σ = 77441681664. Its totient is φ = 12594978512.

The previous prime is 38251855207. The next prime is 38251855219. The reversal of 38251855218 is 81255815283.

It is not an unprimeable number, because it can be changed into a prime (38251855219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136921 + ... + 308627.

It is an arithmetic number, because the mean of its divisors is an integer number (2420052552).

Almost surely, 2^38251855218 is an apocalyptic number.

38251855218 is an abundant number, since it is smaller than the sum of its proper divisors (39189826446).

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

38251855218 is a wasteful number, since it uses less digits than its factorization.

38251855218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172166.

The product of its digits is 768000, while the sum is 48.

The spelling of 38251855218 in words is "thirty-eight billion, two hundred fifty-one million, eight hundred fifty-five thousand, two hundred eighteen".