194990918 has 32 divisors (see below), whose sum is σ = 324492480. Its totient is φ = 87408640.

The previous prime is 194990911. The next prime is 194990923. The reversal of 194990918 is 819099491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194990911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303878 + ... + 304518.

It is an arithmetic number, because the mean of its divisors is an integer number (10140390).

Almost surely, 2^194990918 is an apocalyptic number.

194990918 is a deficient number, since it is larger than the sum of its proper divisors (129501562).

194990918 is a wasteful number, since it uses less digits than its factorization.

194990918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its (nonzero) digits is 209952, while the sum is 50.

The square root of 194990918 is about 13963.9148522182. The cubic root of 194990918 is about 579.8799969723.

The spelling of 194990918 in words is "one hundred ninety-four million, nine hundred ninety thousand, nine hundred eighteen".