138790254131 has 4 divisors (see below), whose sum is σ = 138796242000. Its totient is φ = 138784266264.

The previous prime is 138790254103. The next prime is 138790254203. The reversal of 138790254131 is 131452097831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138790254131 is a prime.

It is a super-2 number, since 2×138790254131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138790254431) 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, 2959031 + ... + 3005568.

It is an arithmetic number, because the mean of its divisors is an integer number (34699060500).

Almost surely, 2^138790254131 is an apocalyptic number.

138790254131 is a deficient number, since it is larger than the sum of its proper divisors (5987869).

138790254131 is an equidigital number, since it uses as much as digits as its factorization.

138790254131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987868.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 138790254131 in words is "one hundred thirty-eight billion, seven hundred ninety million, two hundred fifty-four thousand, one hundred thirty-one".