198799061923 has 8 divisors (see below), whose sum is σ = 247853376000. Its totient is φ = 154908359880.

The previous prime is 198799061863. The next prime is 198799061953. The reversal of 198799061923 is 329160997891.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198799061923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198799061953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290902923 + ... + 1290903076.

It is an arithmetic number, because the mean of its divisors is an integer number (30981672000).

Almost surely, 2^198799061923 is an apocalyptic number.

198799061923 is a deficient number, since it is larger than the sum of its proper divisors (49054314077).

198799061923 is a wasteful number, since it uses less digits than its factorization.

198799061923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581806017.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The spelling of 198799061923 in words is "one hundred ninety-eight billion, seven hundred ninety-nine million, sixty-one thousand, nine hundred twenty-three".