18369429899 has 2 divisors, whose sum is σ = 18369429900. Its totient is φ = 18369429898.

The previous prime is 18369429887. The next prime is 18369429913. The reversal of 18369429899 is 99892496381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18369429899 - 2⁸ = 18369429643 is a prime.

It is a super-4 number, since 4×18369429899⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (18369429829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9184714949 + 9184714950.

It is an arithmetic number, because the mean of its divisors is an integer number (9184714950).

Almost surely, 2^18369429899 is an apocalyptic number.

18369429899 is a deficient number, since it is larger than the sum of its proper divisors (1).

18369429899 is an equidigital number, since it uses as much as digits as its factorization.

18369429899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60466176, while the sum is 68.

The spelling of 18369429899 in words is "eighteen billion, three hundred sixty-nine million, four hundred twenty-nine thousand, eight hundred ninety-nine".