199374012 has 18 divisors (see below), whose sum is σ = 503973288. Its totient is φ = 66457992.

The previous prime is 199374001. The next prime is 199374017. The reversal of 199374012 is 210473991.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×199374012² = 79499993321952288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5538167 = 199374012 / (1 + 9 + 9 + 3 + 7 + 4 + 0 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199374017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2769048 + ... + 2769119.

It is an arithmetic number, because the mean of its divisors is an integer number (27998516).

Almost surely, 2^199374012 is an apocalyptic number.

199374012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199374012 is an abundant number, since it is smaller than the sum of its proper divisors (304599276).

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

199374012 is a wasteful number, since it uses less digits than its factorization.

199374012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538177 (or 5538172 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 199374012 is about 14119.9862606165. The cubic root of 199374012 is about 584.1927766345.

The spelling of 199374012 in words is "one hundred ninety-nine million, three hundred seventy-four thousand, twelve".