199331916 has 24 divisors (see below), whose sum is σ = 531552000. Its totient is φ = 56951952.

The previous prime is 199331903. The next prime is 199331917. The reversal of 199331916 is 619133991.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (199331917) 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, 1186416 + ... + 1186583.

It is an arithmetic number, because the mean of its divisors is an integer number (22148000).

Almost surely, 2^199331916 is an apocalyptic number.

It is an amenable number.

199331916 is an abundant number, since it is smaller than the sum of its proper divisors (332220084).

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

199331916 is a wasteful number, since it uses less digits than its factorization.

199331916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373013 (or 2373011 counting only the distinct ones).

The product of its digits is 39366, while the sum is 42.

The square root of 199331916 is about 14118.4955289153. The cubic root of 199331916 is about 584.1516580857.

The spelling of 199331916 in words is "one hundred ninety-nine million, three hundred thirty-one thousand, nine hundred sixteen".