19860990112 has 48 divisors (see below), whose sum is σ = 42829070760. Its totient is φ = 9024053248.

The previous prime is 19860990101. The next prime is 19860990161. The reversal of 19860990112 is 21109906891.

It can be written as a sum of positive squares in 4 ways, for example, as 15236446096 + 4624544016 = 123436^2 + 68004^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 613693 + ... + 645244.

Almost surely, 2^19860990112 is an apocalyptic number.

It is an amenable number.

19860990112 is an abundant number, since it is smaller than the sum of its proper divisors (22968080648).

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

19860990112 is a wasteful number, since it uses less digits than its factorization.

19860990112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258993 (or 1258985 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 46.

The spelling of 19860990112 in words is "nineteen billion, eight hundred sixty million, nine hundred ninety thousand, one hundred twelve".