185118488131 has 2 divisors, whose sum is σ = 185118488132. Its totient is φ = 185118488130.

The previous prime is 185118488119. The next prime is 185118488153. The reversal of 185118488131 is 131884811581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 185118488131 - 2⁷ = 185118488003 is a prime.

It is a super-2 number, since 2×185118488131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (185118488111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92559244065 + 92559244066.

It is an arithmetic number, because the mean of its divisors is an integer number (92559244066).

Almost surely, 2^185118488131 is an apocalyptic number.

185118488131 is a deficient number, since it is larger than the sum of its proper divisors (1).

185118488131 is an equidigital number, since it uses as much as digits as its factorization.

185118488131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 245760, while the sum is 49.

The spelling of 185118488131 in words is "one hundred eighty-five billion, one hundred eighteen million, four hundred eighty-eight thousand, one hundred thirty-one".