19922874498 has 162 divisors, whose sum is σ = 48869631369. Its totient is φ = 5863860864.

The previous prime is 19922874493. The next prime is 19922874527. The reversal of 19922874498 is 89447822991.

19922874498 is a `hidden beast` number, since 1 + 99 + 22 + 87 + 449 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18233911089 + 1688963409 = 135033^2 + 41097^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=99807.

Its product of digits (20901888) is a multiple of the sum of its prime divisors (144).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19922874493) 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 80 ways as a sum of consecutive naturals, for example, 193425915 + ... + 193426017.

Almost surely, 2^19922874498 is an apocalyptic number.

19922874498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19922874498

19922874498 is an abundant number, since it is smaller than the sum of its proper divisors (28946756871).

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

19922874498 is a wasteful number, since it uses less digits than its factorization.

19922874498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 144 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The spelling of 19922874498 in words is "nineteen billion, nine hundred twenty-two million, eight hundred seventy-four thousand, four hundred ninety-eight".