198172276993 has 8 divisors (see below), whose sum is σ = 201273934400. Its totient is φ = 195074850960.

The previous prime is 198172276931. The next prime is 198172276999. The reversal of 198172276993 is 399672271891.

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

It is a cyclic number.

It is not a de Polignac number, because 198172276993 - 2¹⁷ = 198172145921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198172276999) 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, 963378 + ... + 1150843.

It is an arithmetic number, because the mean of its divisors is an integer number (25159241800).

Almost surely, 2^198172276993 is an apocalyptic number.

It is an amenable number.

198172276993 is a deficient number, since it is larger than the sum of its proper divisors (3101657407).

198172276993 is a wasteful number, since it uses less digits than its factorization.

198172276993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115687.

The product of its digits is 20575296, while the sum is 64.

The spelling of 198172276993 in words is "one hundred ninety-eight billion, one hundred seventy-two million, two hundred seventy-six thousand, nine hundred ninety-three".