19427199498 has 24 divisors (see below), whose sum is σ = 48105446688. Its totient is φ = 5550628392.

The previous prime is 19427199457. The next prime is 19427199503. The reversal of 19427199498 is 89499172491.

19427199498 is a `hidden beast` number, since 19 + 42 + 7 + 1 + 99 + 498 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77091936 + ... + 77092187.

It is an arithmetic number, because the mean of its divisors is an integer number (2004393612).

Almost surely, 2^19427199498 is an apocalyptic number.

19427199498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19427199498 is an abundant number, since it is smaller than the sum of its proper divisors (28678247190).

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

19427199498 is a wasteful number, since it uses less digits than its factorization.

19427199498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154184138 (or 154184135 counting only the distinct ones).

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

The spelling of 19427199498 in words is "nineteen billion, four hundred twenty-seven million, one hundred ninety-nine thousand, four hundred ninety-eight".