18792112531 has 2 divisors, whose sum is σ = 18792112532. Its totient is φ = 18792112530.

The previous prime is 18792112529. The next prime is 18792112567. The reversal of 18792112531 is 13521129781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18792112531 - 2¹ = 18792112529 is a prime.

It is a super-2 number, since 2×18792112531² (a number of 21 digits) contains 22 as substring.

Together with 18792112529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18792212531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9396056265 + 9396056266.

It is an arithmetic number, because the mean of its divisors is an integer number (9396056266).

Almost surely, 2^18792112531 is an apocalyptic number.

18792112531 is a deficient number, since it is larger than the sum of its proper divisors (1).

18792112531 is an equidigital number, since it uses as much as digits as its factorization.

18792112531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 40.

The spelling of 18792112531 in words is "eighteen billion, seven hundred ninety-two million, one hundred twelve thousand, five hundred thirty-one".