198291956 has 12 divisors (see below), whose sum is σ = 347410980. Its totient is φ = 99031680.

The previous prime is 198291943. The next prime is 198291983. The reversal of 198291956 is 659192891.

It can be written as a sum of positive squares in 2 ways, for example, as 132940900 + 65351056 = 11530^2 + 8084^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24611 + ... + 31658.

It is an arithmetic number, because the mean of its divisors is an integer number (28950915).

Almost surely, 2^198291956 is an apocalyptic number.

It is an amenable number.

198291956 is a deficient number, since it is larger than the sum of its proper divisors (149119024).

198291956 is a wasteful number, since it uses less digits than its factorization.

198291956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57154 (or 57152 counting only the distinct ones).

The product of its digits is 349920, while the sum is 50.

The square root of 198291956 is about 14081.6176627545. The cubic root of 198291956 is about 583.1340021708.

The spelling of 198291956 in words is "one hundred ninety-eight million, two hundred ninety-one thousand, nine hundred fifty-six".