138258091613 has 4 divisors (see below), whose sum is σ = 139106300928. Its totient is φ = 137409882300.

The previous prime is 138258091553. The next prime is 138258091619. The reversal of 138258091613 is 316190852831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138258091613 - 2⁸ = 138258091357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138258091619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424104413 + ... + 424104738.

It is an arithmetic number, because the mean of its divisors is an integer number (34776575232).

Almost surely, 2^138258091613 is an apocalyptic number.

It is an amenable number.

138258091613 is a deficient number, since it is larger than the sum of its proper divisors (848209315).

138258091613 is an equidigital number, since it uses as much as digits as its factorization.

138258091613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848209314.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 138258091613 in words is "one hundred thirty-eight billion, two hundred fifty-eight million, ninety-one thousand, six hundred thirteen".