19920118975 has 6 divisors (see below), whose sum is σ = 24700947560. Its totient is φ = 15936095160.

The previous prime is 19920118969. The next prime is 19920119029. The reversal of 19920118975 is 57981102991.

It is not a de Polignac number, because 19920118975 - 2²³ = 19911730367 is a prime.

It is a super-2 number, since 2×19920118975² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 398402355 + ... + 398402404.

Almost surely, 2^19920118975 is an apocalyptic number.

19920118975 is a deficient number, since it is larger than the sum of its proper divisors (4780828585).

19920118975 is an equidigital number, since it uses as much as digits as its factorization.

19920118975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796804769 (or 796804764 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 52.

The spelling of 19920118975 in words is "nineteen billion, nine hundred twenty million, one hundred eighteen thousand, nine hundred seventy-five".