198276950089 has 3 divisors (see below), whose sum is σ = 198277395373. Its totient is φ = 198276504806.

The previous prime is 198276950077. The next prime is 198276950101. The reversal of 198276950089 is 980059672891.

The square root of 198276950089 is 445283.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (198276950077) and next prime (198276950101).

It is not a de Polignac number, because 198276950089 - 2¹³ = 198276941897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198276950089.

It is not an unprimeable number, because it can be changed into a prime (198276950009) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 222642 + ... + 667924.

Almost surely, 2^198276950089 is an apocalyptic number.

198276950089 is the 445283-rd square number.

198276950089 is the 222642-nd centered octagonal number.

It is an amenable number.

198276950089 is a deficient number, since it is larger than the sum of its proper divisors (445284).

198276950089 is an frugal number, since it uses more digits than its factorization.

198276950089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890566 (or 445283 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 64.

Multiplying 198276950089 by its sum of digits (64), we get a square (12689724805696 = 3562264²).

The spelling of 198276950089 in words is "one hundred ninety-eight billion, two hundred seventy-six million, nine hundred fifty thousand, eighty-nine".