199193892 has 36 divisors (see below), whose sum is σ = 485887920. Its totient is φ = 63509072.

The previous prime is 199193809. The next prime is 199193899. The reversal of 199193892 is 298391991.

It is a super-2 number, since 2×199193892² = 79356413220215328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199193899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9342 + ... + 22037.

Almost surely, 2^199193892 is an apocalyptic number.

199193892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199193892 is an abundant number, since it is smaller than the sum of its proper divisors (286694028).

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

199193892 is a wasteful number, since it uses less digits than its factorization.

199193892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31432 (or 31407 counting only the distinct ones).

The product of its digits is 314928, while the sum is 51.

The square root of 199193892 is about 14113.6066262313. The cubic root of 199193892 is about 584.0167983221.

The spelling of 199193892 in words is "one hundred ninety-nine million, one hundred ninety-three thousand, eight hundred ninety-two".