198622640241 has 45 divisors (see below), whose sum is σ = 310313253019. Its totient is φ = 126599086944.

The previous prime is 198622640107. The next prime is 198622640299. The reversal of 198622640241 is 142046226891.

It is a happy number.

The square root of 198622640241 is 445671.

It is a perfect power (a square), and thus also a powerful number.

198622640241 is a `hidden beast` number, since 1 + 98 + 62 + 264 + 0 + 241 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14663999025 + 183958641216 = 121095^2 + 428904^2 .

It is not a de Polignac number, because 198622640241 - 2¹⁵ = 198622607473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198622640441) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 92252821 + ... + 92254973.

Almost surely, 2^198622640241 is an apocalyptic number.

198622640241 is the 445671-st square number.

198622640241 is the 222836-th centered octagonal number.

It is an amenable number.

198622640241 is a deficient number, since it is larger than the sum of its proper divisors (111690612778).

198622640241 is an frugal number, since it uses more digits than its factorization.

198622640241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364 (or 2179 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 198622640241 in words is "one hundred ninety-eight billion, six hundred twenty-two million, six hundred forty thousand, two hundred forty-one".