198764565442 has 8 divisors (see below), whose sum is σ = 313838787600. Its totient is φ = 94151636244.

The previous prime is 198764565413. The next prime is 198764565473. The reversal of 198764565442 is 244565467891.

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

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, 2615323192 + ... + 2615323267.

It is an arithmetic number, because the mean of its divisors is an integer number (39229848450).

Almost surely, 2^198764565442 is an apocalyptic number.

198764565442 is a deficient number, since it is larger than the sum of its proper divisors (115074222158).

198764565442 is a wasteful number, since it uses less digits than its factorization.

198764565442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230646480.

The product of its digits is 58060800, while the sum is 61.

The spelling of 198764565442 in words is "one hundred ninety-eight billion, seven hundred sixty-four million, five hundred sixty-five thousand, four hundred forty-two".