161198204 has 12 divisors (see below), whose sum is σ = 296944200. Its totient is φ = 76357008.

The previous prime is 161198143. The next prime is 161198209. The reversal of 161198204 is 402891161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161198209) 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, 1060439 + ... + 1060590.

It is an arithmetic number, because the mean of its divisors is an integer number (24745350).

Almost surely, 2^161198204 is an apocalyptic number.

It is an amenable number.

161198204 is a deficient number, since it is larger than the sum of its proper divisors (135745996).

161198204 is a wasteful number, since it uses less digits than its factorization.

161198204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121052 (or 2121050 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 161198204 is about 12696.3854698887. The cubic root of 161198204 is about 544.2353319692.

The spelling of 161198204 in words is "one hundred sixty-one million, one hundred ninety-eight thousand, two hundred four".