18130429631 has 2 divisors, whose sum is σ = 18130429632. Its totient is φ = 18130429630.

The previous prime is 18130429619. The next prime is 18130429643. The reversal of 18130429631 is 13692403181.

It is a balanced prime because it is at equal distance from previous prime (18130429619) and next prime (18130429643).

It is a cyclic number.

It is not a de Polignac number, because 18130429631 - 2¹⁰ = 18130428607 is a prime.

It is a super-2 number, since 2×18130429631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18130429601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9065214815 + 9065214816.

It is an arithmetic number, because the mean of its divisors is an integer number (9065214816).

Almost surely, 2^18130429631 is an apocalyptic number.

18130429631 is a deficient number, since it is larger than the sum of its proper divisors (1).

18130429631 is an equidigital number, since it uses as much as digits as its factorization.

18130429631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 18130429631 in words is "eighteen billion, one hundred thirty million, four hundred twenty-nine thousand, six hundred thirty-one".