19972961883 has 48 divisors (see below), whose sum is σ = 35530936320. Its totient is φ = 11044933200.

The previous prime is 19972961863. The next prime is 19972961893. The reversal of 19972961883 is 38816927991.

19972961883 is a `hidden beast` number, since 1 + 9 + 9 + 7 + 2 + 9 + 618 + 8 + 3 = 666.

It is not a de Polignac number, because 19972961883 - 2²⁰ = 19971913307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 19972961883.

It is not an unprimeable number, because it can be changed into a prime (19972961863) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 202483 + ... + 284508.

It is an arithmetic number, because the mean of its divisors is an integer number (740227840).

Almost surely, 2^19972961883 is an apocalyptic number.

19972961883 is a deficient number, since it is larger than the sum of its proper divisors (15557974437).

19972961883 is a wasteful number, since it uses less digits than its factorization.

19972961883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487045 (or 487032 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The spelling of 19972961883 in words is "nineteen billion, nine hundred seventy-two million, nine hundred sixty-one thousand, eight hundred eighty-three".