199813804 has 12 divisors (see below), whose sum is σ = 368078200. Its totient is φ = 94648608.

The previous prime is 199813739. The next prime is 199813813. The reversal of 199813804 is 408318991.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1314489 + ... + 1314640.

Almost surely, 2^199813804 is an apocalyptic number.

It is an amenable number.

199813804 is a deficient number, since it is larger than the sum of its proper divisors (168264396).

199813804 is a wasteful number, since it uses less digits than its factorization.

199813804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629152 (or 2629150 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 199813804 is about 14135.5510681402. The cubic root of 199813804 is about 584.6220111597.

The spelling of 199813804 in words is "one hundred ninety-nine million, eight hundred thirteen thousand, eight hundred four".