199704960019 has 2 divisors, whose sum is σ = 199704960020. Its totient is φ = 199704960018.

The previous prime is 199704959929. The next prime is 199704960023. The reversal of 199704960019 is 910069407991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199704960019 - 2⁷ = 199704959891 is a prime.

It is a super-2 number, since 2×199704960019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (199704960079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99852480009 + 99852480010.

It is an arithmetic number, because the mean of its divisors is an integer number (99852480010).

Almost surely, 2^199704960019 is an apocalyptic number.

199704960019 is a deficient number, since it is larger than the sum of its proper divisors (1).

199704960019 is an equidigital number, since it uses as much as digits as its factorization.

199704960019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The spelling of 199704960019 in words is "one hundred ninety-nine billion, seven hundred four million, nine hundred sixty thousand, nineteen".