198634831201 has 4 divisors (see below), whose sum is σ = 198727610004. Its totient is φ = 198542052400.

The previous prime is 198634831189. The next prime is 198634831273. The reversal of 198634831201 is 102138436891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183697102801 + 14937728400 = 428599^2 + 122220^2 .

It is a cyclic number.

It is not a de Polignac number, because 198634831201 - 2¹⁷ = 198634700129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198634811201) 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, 46386190 + ... + 46390471.

It is an arithmetic number, because the mean of its divisors is an integer number (49681902501).

Almost surely, 2^198634831201 is an apocalyptic number.

It is an amenable number.

198634831201 is a deficient number, since it is larger than the sum of its proper divisors (92778803).

198634831201 is an equidigital number, since it uses as much as digits as its factorization.

198634831201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92778802.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 198634831201 in words is "one hundred ninety-eight billion, six hundred thirty-four million, eight hundred thirty-one thousand, two hundred one".