38722891113 has 6 divisors (see below), whose sum is σ = 55933064954. Its totient is φ = 25815260736.

The previous prime is 38722890991. The next prime is 38722891139. The reversal of 38722891113 is 31119822783.

It can be written as a sum of positive squares in only one way, i.e., 21396960729 + 17325930384 = 146277^2 + 131628^2 .

It is not a de Polignac number, because 38722891113 - 2¹⁶ = 38722825577 is a prime.

It is a super-2 number, since 2×38722891113² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38722891913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2151271720 + ... + 2151271737.

Almost surely, 2^38722891113 is an apocalyptic number.

It is an amenable number.

38722891113 is a deficient number, since it is larger than the sum of its proper divisors (17210173841).

38722891113 is a wasteful number, since it uses less digits than its factorization.

38722891113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302543463 (or 4302543460 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 38722891113 in words is "thirty-eight billion, seven hundred twenty-two million, eight hundred ninety-one thousand, one hundred thirteen".