18011627131 has 2 divisors, whose sum is σ = 18011627132. Its totient is φ = 18011627130.

The previous prime is 18011627027. The next prime is 18011627167. The reversal of 18011627131 is 13172611081.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18011627131 - 2¹⁹ = 18011102843 is a prime.

It is a super-2 number, since 2×18011627131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18011627093 and 18011627102.

It is not a weakly prime, because it can be changed into another prime (18011627531) 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 as a sum of consecutive naturals, namely, 9005813565 + 9005813566.

It is an arithmetic number, because the mean of its divisors is an integer number (9005813566).

Almost surely, 2^18011627131 is an apocalyptic number.

18011627131 is a deficient number, since it is larger than the sum of its proper divisors (1).

18011627131 is an equidigital number, since it uses as much as digits as its factorization.

18011627131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 18011627131 in words is "eighteen billion, eleven million, six hundred twenty-seven thousand, one hundred thirty-one".