198161593236 has 48 divisors (see below), whose sum is σ = 543973006080. Its totient is φ = 62168342400.

The previous prime is 198161593213. The next prime is 198161593349. The reversal of 198161593236 is 632395161891.

198161593236 is a `hidden beast` number, since 1 + 9 + 8 + 16 + 1 + 593 + 2 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53963740 + ... + 53967411.

It is an arithmetic number, because the mean of its divisors is an integer number (11332770960).

Almost surely, 2^198161593236 is an apocalyptic number.

It is an amenable number.

198161593236 is an abundant number, since it is smaller than the sum of its proper divisors (345811412844).

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

198161593236 is a wasteful number, since it uses less digits than its factorization.

198161593236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107931181 (or 107931173 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The spelling of 198161593236 in words is "one hundred ninety-eight billion, one hundred sixty-one million, five hundred ninety-three thousand, two hundred thirty-six".