18969000199 has 2 divisors, whose sum is σ = 18969000200. Its totient is φ = 18969000198.

The previous prime is 18969000179. The next prime is 18969000221. The reversal of 18969000199 is 99100096981.

It is a weak prime.

It is an emirp because it is prime and its reverse (99100096981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18969000199 - 2¹⁵ = 18968967431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18969000179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9484500099 + 9484500100.

It is an arithmetic number, because the mean of its divisors is an integer number (9484500100).

Almost surely, 2^18969000199 is an apocalyptic number.

18969000199 is a deficient number, since it is larger than the sum of its proper divisors (1).

18969000199 is an equidigital number, since it uses as much as digits as its factorization.

18969000199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 52.

The spelling of 18969000199 in words is "eighteen billion, nine hundred sixty-nine million, one hundred ninety-nine", and thus it is an aban number.