18434416199 has 2 divisors, whose sum is σ = 18434416200. Its totient is φ = 18434416198.

The previous prime is 18434416193. The next prime is 18434416213. The reversal of 18434416199 is 99161443481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18434416199 - 2³² = 14139448903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18434416193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9217208099 + 9217208100.

It is an arithmetic number, because the mean of its divisors is an integer number (9217208100).

Almost surely, 2^18434416199 is an apocalyptic number.

18434416199 is a deficient number, since it is larger than the sum of its proper divisors (1).

18434416199 is an equidigital number, since it uses as much as digits as its factorization.

18434416199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 50.

The spelling of 18434416199 in words is "eighteen billion, four hundred thirty-four million, four hundred sixteen thousand, one hundred ninety-nine".