199012164 has 24 divisors (see below), whose sum is σ = 500082240. Its totient is φ = 61234464.

The previous prime is 199012153. The next prime is 199012199. The reversal of 199012164 is 461210991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637704 + ... + 638015.

It is an arithmetic number, because the mean of its divisors is an integer number (20836760).

Almost surely, 2^199012164 is an apocalyptic number.

It is an amenable number.

199012164 is an abundant number, since it is smaller than the sum of its proper divisors (301070076).

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

199012164 is a wasteful number, since it uses less digits than its factorization.

199012164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275739 (or 1275737 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 199012164 is about 14107.1671146265. The cubic root of 199012164 is about 583.8391414414.

The spelling of 199012164 in words is "one hundred ninety-nine million, twelve thousand, one hundred sixty-four".