13913790138 has 12 divisors (see below), whose sum is σ = 30146545338. Its totient is φ = 4637930040.

The previous prime is 13913790133. The next prime is 13913790151. The reversal of 13913790138 is 83109731931.

It can be written as a sum of positive squares in only one way, i.e., 9049146129 + 4864644009 = 95127^2 + 69747^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13913790093 and 13913790102.

It is not an unprimeable number, because it can be changed into a prime (13913790133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 386494153 + ... + 386494188.

Almost surely, 2^13913790138 is an apocalyptic number.

13913790138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13913790138 is an abundant number, since it is smaller than the sum of its proper divisors (16232755200).

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

13913790138 is a wasteful number, since it uses less digits than its factorization.

13913790138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772988349 (or 772988346 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The spelling of 13913790138 in words is "thirteen billion, nine hundred thirteen million, seven hundred ninety thousand, one hundred thirty-eight".