19099451904 has 80 divisors (see below), whose sum is σ = 54796201152. Its totient is φ = 5876748288.

The previous prime is 19099451897. The next prime is 19099451951. The reversal of 19099451904 is 40915499091.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458284 + ... + 498219.

Almost surely, 2^19099451904 is an apocalyptic number.

It is an amenable number.

19099451904 is an abundant number, since it is smaller than the sum of its proper divisors (35696749248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19099451904 is an equidigital number, since it uses as much as digits as its factorization.

19099451904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956537 (or 956521 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 51.

The spelling of 19099451904 in words is "nineteen billion, ninety-nine million, four hundred fifty-one thousand, nine hundred four".