18630694099 has 2 divisors, whose sum is σ = 18630694100. Its totient is φ = 18630694098.

The previous prime is 18630694079. The next prime is 18630694129. The reversal of 18630694099 is 99049603681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18630694099 - 2¹¹ = 18630692051 is a prime.

It is a super-2 number, since 2×18630694099² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18630694039) 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, 9315347049 + 9315347050.

It is an arithmetic number, because the mean of its divisors is an integer number (9315347050).

Almost surely, 2^18630694099 is an apocalyptic number.

18630694099 is a deficient number, since it is larger than the sum of its proper divisors (1).

18630694099 is an equidigital number, since it uses as much as digits as its factorization.

18630694099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The spelling of 18630694099 in words is "eighteen billion, six hundred thirty million, six hundred ninety-four thousand, ninety-nine".