19972409592 has 64 divisors (see below), whose sum is σ = 50272786080. Its totient is φ = 6612058112.

The previous prime is 19972409521. The next prime is 19972409593. The reversal of 19972409592 is 29590427991.

It is a super-2 number, since 2×19972409592² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19972409593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2172718 + ... + 2181890.

Almost surely, 2^19972409592 is an apocalyptic number.

19972409592 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19972409592 is an abundant number, since it is smaller than the sum of its proper divisors (30300376488).

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

19972409592 is a wasteful number, since it uses less digits than its factorization.

19972409592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9792 (or 9788 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 57.

The spelling of 19972409592 in words is "nineteen billion, nine hundred seventy-two million, four hundred nine thousand, five hundred ninety-two".