198259954180 has 24 divisors (see below), whose sum is σ = 427598497368. Its totient is φ = 77160630528.

The previous prime is 198259954169. The next prime is 198259954181. The reversal of 198259954180 is 81459952891.

It can be written as a sum of positive squares in 4 ways, for example, as 5884730944 + 192375223236 = 76712^2 + 438606^2 .

It is not an unprimeable number, because it can be changed into a prime (198259954181) 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, 133958689 + ... + 133960168.

It is an arithmetic number, because the mean of its divisors is an integer number (17816604057).

Almost surely, 2^198259954180 is an apocalyptic number.

198259954180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198259954180 is an abundant number, since it is smaller than the sum of its proper divisors (229338543188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198259954180 is a wasteful number, since it uses less digits than its factorization.

198259954180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267918903 (or 267918901 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 61.

The spelling of 198259954180 in words is "one hundred ninety-eight billion, two hundred fifty-nine million, nine hundred fifty-four thousand, one hundred eighty".