191092012 has 6 divisors (see below), whose sum is σ = 334411028. Its totient is φ = 95546004.

The previous prime is 191092007. The next prime is 191092061. The reversal of 191092012 is 210290191.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23886498 + ... + 23886505.

Almost surely, 2^191092012 is an apocalyptic number.

It is an amenable number.

191092012 is a deficient number, since it is larger than the sum of its proper divisors (143319016).

191092012 is a wasteful number, since it uses less digits than its factorization.

191092012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47773007 (or 47773005 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 191092012 is about 13823.6034375990. The cubic root of 191092012 is about 575.9889843251.

The spelling of 191092012 in words is "one hundred ninety-one million, ninety-two thousand, twelve".