138962949291 has 12 divisors (see below), whose sum is σ = 200728861632. Its totient is φ = 92639842416.

The previous prime is 138962949271. The next prime is 138962949299. The reversal of 138962949291 is 192949269831.

138962949291 is a `hidden beast` number, since 1 + 3 + 89 + 62 + 9 + 492 + 9 + 1 = 666.

It is not a de Polignac number, because 138962949291 - 2⁵ = 138962949259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138962949299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307110 + ... + 610116.

It is an arithmetic number, because the mean of its divisors is an integer number (16727405136).

Almost surely, 2^138962949291 is an apocalyptic number.

138962949291 is a deficient number, since it is larger than the sum of its proper divisors (61765912341).

138962949291 is a wasteful number, since it uses less digits than its factorization.

138962949291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353970 (or 353967 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 63.

The spelling of 138962949291 in words is "one hundred thirty-eight billion, nine hundred sixty-two million, nine hundred forty-nine thousand, two hundred ninety-one".