199504996019 has 12 divisors (see below), whose sum is σ = 232123950000. Its totient is φ = 170969864688.

The previous prime is 199504996013. The next prime is 199504996043. The reversal of 199504996019 is 910699405991.

It is not a de Polignac number, because 199504996019 - 2³² = 195210028723 is a prime.

It is a super-2 number, since 2×199504996019² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199504996013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162284 + ... + 652185.

It is an arithmetic number, because the mean of its divisors is an integer number (19343662500).

Almost surely, 2^199504996019 is an apocalyptic number.

199504996019 is a deficient number, since it is larger than the sum of its proper divisors (32618953981).

199504996019 is an equidigital number, since it uses as much as digits as its factorization.

199504996019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819482 (or 819475 counting only the distinct ones).

The product of its (nonzero) digits is 7085880, while the sum is 62.

The spelling of 199504996019 in words is "one hundred ninety-nine billion, five hundred four million, nine hundred ninety-six thousand, nineteen".