189904869199 has 2 divisors, whose sum is σ = 189904869200. Its totient is φ = 189904869198.

The previous prime is 189904869191. The next prime is 189904869227. The reversal of 189904869199 is 991968409981.

It is a weak prime.

It is an emirp because it is prime and its reverse (991968409981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189904869199 - 2³ = 189904869191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189904869191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94952434599 + 94952434600.

It is an arithmetic number, because the mean of its divisors is an integer number (94952434600).

Almost surely, 2^189904869199 is an apocalyptic number.

189904869199 is a deficient number, since it is larger than the sum of its proper divisors (1).

189904869199 is an equidigital number, since it uses as much as digits as its factorization.

189904869199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90699264, while the sum is 73.

The spelling of 189904869199 in words is "one hundred eighty-nine billion, nine hundred four million, eight hundred sixty-nine thousand, one hundred ninety-nine".