19403972298 has 48 divisors (see below), whose sum is σ = 42546816000. Its totient is φ = 6390776160.

The previous prime is 19403972257. The next prime is 19403972311. The reversal of 19403972298 is 89227930491.

19403972298 is a `hidden beast` number, since 1 + 9 + 403 + 9 + 7 + 229 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 493323 + ... + 531201.

It is an arithmetic number, because the mean of its divisors is an integer number (886392000).

Almost surely, 2^19403972298 is an apocalyptic number.

19403972298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

19403972298 is an abundant number, since it is smaller than the sum of its proper divisors (23142843702).

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

19403972298 is a wasteful number, since it uses less digits than its factorization.

19403972298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38227 (or 38224 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 19403972298 in words is "nineteen billion, four hundred three million, nine hundred seventy-two thousand, two hundred ninety-eight".