19898358594 has 16 divisors (see below), whose sum is σ = 42137700768. Its totient is φ = 6242622272.

The previous prime is 19898358581. The next prime is 19898358629. The reversal of 19898358594 is 49585389891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97540872 + ... + 97541075.

It is an arithmetic number, because the mean of its divisors is an integer number (2633606298).

Almost surely, 2^19898358594 is an apocalyptic number.

19898358594 is an abundant number, since it is smaller than the sum of its proper divisors (22239342174).

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

19898358594 is a wasteful number, since it uses less digits than its factorization.

19898358594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195081969.

The product of its digits is 111974400, while the sum is 69.

The spelling of 19898358594 in words is "nineteen billion, eight hundred ninety-eight million, three hundred fifty-eight thousand, five hundred ninety-four".