199163904 has 68 divisors (see below), whose sum is σ = 531623976. Its totient is φ = 66322432.

The previous prime is 199163897. The next prime is 199163911. The reversal of 199163904 is 409361991.

It is an interprime number because it is at equal distance from previous prime (199163897) and next prime (199163911).

It is a congruent number.

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, 196102 + ... + 197114.

Almost surely, 2^199163904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199163904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265811988).

199163904 is an abundant number, since it is smaller than the sum of its proper divisors (332460072).

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

199163904 is an frugal number, since it uses more digits than its factorization.

199163904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 199163904 is about 14112.5442071938. The cubic root of 199163904 is about 583.9874895675.

The spelling of 199163904 in words is "one hundred ninety-nine million, one hundred sixty-three thousand, nine hundred four".