338397531538 has 32 divisors (see below), whose sum is σ = 563375736000. Its totient is φ = 151143165120.

The previous prime is 338397531529. The next prime is 338397531539. The reversal of 338397531538 is 835135793833.

It is a super-2 number, since 2×338397531538² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338397531539) 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, 2940628 + ... + 3053536.

It is an arithmetic number, because the mean of its divisors is an integer number (17605491750).

Almost surely, 2^338397531538 is an apocalyptic number.

338397531538 is a deficient number, since it is larger than the sum of its proper divisors (224978204462).

338397531538 is a wasteful number, since it uses less digits than its factorization.

338397531538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115290.

The product of its digits is 24494400, while the sum is 58.

The spelling of 338397531538 in words is "three hundred thirty-eight billion, three hundred ninety-seven million, five hundred thirty-one thousand, five hundred thirty-eight".