19490798430 has 24 divisors (see below), whose sum is σ = 50676076152. Its totient is φ = 5197546224.

The previous prime is 19490798363. The next prime is 19490798461. The reversal of 19490798430 is 3489709491.

19490798430 is a `hidden beast` number, since 1 + 9 + 490 + 79 + 84 + 3 + 0 = 666.

It is a congruent 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, 108282124 + ... + 108282303.

It is an arithmetic number, because the mean of its divisors is an integer number (2111503173).

Almost surely, 2^19490798430 is an apocalyptic number.

19490798430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19490798430 is an abundant number, since it is smaller than the sum of its proper divisors (31185277722).

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

19490798430 is a wasteful number, since it uses less digits than its factorization.

19490798430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216564440 (or 216564437 counting only the distinct ones).

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

The spelling of 19490798430 in words is "nineteen billion, four hundred ninety million, seven hundred ninety-eight thousand, four hundred thirty".