19432870199 has 2 divisors, whose sum is σ = 19432870200. Its totient is φ = 19432870198.

The previous prime is 19432870189. The next prime is 19432870201. The reversal of 19432870199 is 99107823491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19432870199 - 2⁴ = 19432870183 is a prime.

Together with 19432870201, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19432870199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19432870129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9716435099 + 9716435100.

It is an arithmetic number, because the mean of its divisors is an integer number (9716435100).

Almost surely, 2^19432870199 is an apocalyptic number.

19432870199 is a deficient number, since it is larger than the sum of its proper divisors (1).

19432870199 is an equidigital number, since it uses as much as digits as its factorization.

19432870199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 19432870199 in words is "nineteen billion, four hundred thirty-two million, eight hundred seventy thousand, one hundred ninety-nine".