199934190 has 64 divisors (see below), whose sum is σ = 550379520. Its totient is φ = 51593760.

The previous prime is 199934171. The next prime is 199934213. The reversal of 199934190 is 91439991.

It is a super-2 number, since 2×199934190² = 79947360661912200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3574 + ... + 20313.

It is an arithmetic number, because the mean of its divisors is an integer number (8599680).

Almost surely, 2^199934190 is an apocalyptic number.

199934190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199934190 is an abundant number, since it is smaller than the sum of its proper divisors (350445330).

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

199934190 is a wasteful number, since it uses less digits than its factorization.

199934190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23934 (or 23928 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The square root of 199934190 is about 14139.8086974329. The cubic root of 199934190 is about 584.7393974034.

The spelling of 199934190 in words is "one hundred ninety-nine million, nine hundred thirty-four thousand, one hundred ninety".