19807592940 has 36 divisors (see below), whose sum is σ = 60083032464. Its totient is φ = 5282024736.

The previous prime is 19807592927. The next prime is 19807592977. The reversal of 19807592940 is 4929570891.

19807592940 is a `hidden beast` number, since 1 + 9 + 8 + 0 + 7 + 592 + 9 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55020912 + ... + 55021271.

It is an arithmetic number, because the mean of its divisors is an integer number (1668973124).

Almost surely, 2^19807592940 is an apocalyptic number.

19807592940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19807592940 is an abundant number, since it is smaller than the sum of its proper divisors (40275439524).

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

19807592940 is a wasteful number, since it uses less digits than its factorization.

19807592940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110042198 (or 110042193 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 19807592940 in words is "nineteen billion, eight hundred seven million, five hundred ninety-two thousand, nine hundred forty".