18417373199 has 2 divisors, whose sum is σ = 18417373200. Its totient is φ = 18417373198.

The previous prime is 18417373133. The next prime is 18417373237. The reversal of 18417373199 is 99137371481.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18417373199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18417373199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18417373109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9208686599 + 9208686600.

It is an arithmetic number, because the mean of its divisors is an integer number (9208686600).

Almost surely, 2^18417373199 is an apocalyptic number.

18417373199 is a deficient number, since it is larger than the sum of its proper divisors (1).

18417373199 is an equidigital number, since it uses as much as digits as its factorization.

18417373199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The spelling of 18417373199 in words is "eighteen billion, four hundred seventeen million, three hundred seventy-three thousand, one hundred ninety-nine".