198372641 has 4 divisors (see below), whose sum is σ = 198408384. Its totient is φ = 198336900.

The previous prime is 198372623. The next prime is 198372649. The reversal of 198372641 is 146273891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 198372641 - 2²⁶ = 131263777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198372649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7565 + ... + 21306.

It is an arithmetic number, because the mean of its divisors is an integer number (49602096).

Almost surely, 2^198372641 is an apocalyptic number.

It is an amenable number.

198372641 is a deficient number, since it is larger than the sum of its proper divisors (35743).

198372641 is an equidigital number, since it uses as much as digits as its factorization.

198372641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35742.

The product of its digits is 72576, while the sum is 41.

The square root of 198372641 is about 14084.4822766050. The cubic root of 198372641 is about 583.2130838572.

The spelling of 198372641 in words is "one hundred ninety-eight million, three hundred seventy-two thousand, six hundred forty-one".