19040988904 has 32 divisors (see below), whose sum is σ = 41318611200. Its totient is φ = 8057125440.

The previous prime is 19040988893. The next prime is 19040988913. The reversal of 19040988904 is 40988904091.

It is a happy number.

It is a super-2 number, since 2×19040988904² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2147587 + ... + 2156434.

It is an arithmetic number, because the mean of its divisors is an integer number (1291206600).

Almost surely, 2^19040988904 is an apocalyptic number.

19040988904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19040988904 is an abundant number, since it is smaller than the sum of its proper divisors (22277622296).

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

19040988904 is a wasteful number, since it uses less digits than its factorization.

19040988904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4304113 (or 4304109 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 19040988904 in words is "nineteen billion, forty million, nine hundred eighty-eight thousand, nine hundred four".