19626125131 has 4 divisors (see below), whose sum is σ = 19641006000. Its totient is φ = 19611244264.

The previous prime is 19626125039. The next prime is 19626125149. The reversal of 19626125131 is 13152162691.

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-19626125131 is a prime.

It is a super-2 number, since 2×19626125131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19626125161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7438456 + ... + 7441093.

It is an arithmetic number, because the mean of its divisors is an integer number (4910251500).

Almost surely, 2^19626125131 is an apocalyptic number.

19626125131 is a deficient number, since it is larger than the sum of its proper divisors (14880869).

19626125131 is a wasteful number, since it uses less digits than its factorization.

19626125131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14880868.

The product of its digits is 19440, while the sum is 37.

The spelling of 19626125131 in words is "nineteen billion, six hundred twenty-six million, one hundred twenty-five thousand, one hundred thirty-one".