18350000131 has 2 divisors, whose sum is σ = 18350000132. Its totient is φ = 18350000130.

The previous prime is 18350000117. The next prime is 18350000171. The reversal of 18350000131 is 13100005381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18350000131 - 2⁵ = 18350000099 is a prime.

It is a super-2 number, since 2×18350000131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18350000171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9175000065 + 9175000066.

It is an arithmetic number, because the mean of its divisors is an integer number (9175000066).

Almost surely, 2^18350000131 is an apocalyptic number.

18350000131 is a deficient number, since it is larger than the sum of its proper divisors (1).

18350000131 is an equidigital number, since it uses as much as digits as its factorization.

18350000131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The spelling of 18350000131 in words is "eighteen billion, three hundred fifty million, one hundred thirty-one", and thus it is an aban number.