19722253198 has 8 divisors (see below), whose sum is σ = 29590364808. Its totient is φ = 9858798264.

The previous prime is 19722253183. The next prime is 19722253219. The reversal of 19722253198 is 89135222791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153561 + ... + 1170532.

It is an arithmetic number, because the mean of its divisors is an integer number (3698795601).

Almost surely, 2^19722253198 is an apocalyptic number.

19722253198 is a deficient number, since it is larger than the sum of its proper divisors (9868111610).

19722253198 is a wasteful number, since it uses less digits than its factorization.

19722253198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328338.

The product of its digits is 544320, while the sum is 49.

The spelling of 19722253198 in words is "nineteen billion, seven hundred twenty-two million, two hundred fifty-three thousand, one hundred ninety-eight".