18836416031 has 2 divisors, whose sum is σ = 18836416032. Its totient is φ = 18836416030.

The previous prime is 18836416019. The next prime is 18836416073. The reversal of 18836416031 is 13061463881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18836416031 - 2¹⁸ = 18836153887 is a prime.

It is a super-2 number, since 2×18836416031² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18836416031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18836416091) 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, 9418208015 + 9418208016.

It is an arithmetic number, because the mean of its divisors is an integer number (9418208016).

Almost surely, 2^18836416031 is an apocalyptic number.

18836416031 is a deficient number, since it is larger than the sum of its proper divisors (1).

18836416031 is an equidigital number, since it uses as much as digits as its factorization.

18836416031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 18836416031 in words is "eighteen billion, eight hundred thirty-six million, four hundred sixteen thousand, thirty-one".