18114631631 has 2 divisors, whose sum is σ = 18114631632. Its totient is φ = 18114631630.

The previous prime is 18114631621. The next prime is 18114631637. The reversal of 18114631631 is 13613641181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18114631631 - 2¹⁸ = 18114369487 is a prime.

It is a super-2 number, since 2×18114631631² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 18114631591 and 18114631600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18114631637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9057315815 + 9057315816.

It is an arithmetic number, because the mean of its divisors is an integer number (9057315816).

Almost surely, 2^18114631631 is an apocalyptic number.

18114631631 is a deficient number, since it is larger than the sum of its proper divisors (1).

18114631631 is an equidigital number, since it uses as much as digits as its factorization.

18114631631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The spelling of 18114631631 in words is "eighteen billion, one hundred fourteen million, six hundred thirty-one thousand, six hundred thirty-one".