191112492 has 12 divisors (see below), whose sum is σ = 445929176. Its totient is φ = 63704160.

The previous prime is 191112491. The next prime is 191112517. The reversal of 191112492 is 294211191.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (191112491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7963009 + ... + 7963032.

Almost surely, 2^191112492 is an apocalyptic number.

191112492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191112492 is an abundant number, since it is smaller than the sum of its proper divisors (254816684).

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

191112492 is a wasteful number, since it uses less digits than its factorization.

191112492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15926048 (or 15926046 counting only the distinct ones).

The product of its digits is 1296, while the sum is 30.

The square root of 191112492 is about 13824.3441797432. The cubic root of 191112492 is about 576.0095605088.

The spelling of 191112492 in words is "one hundred ninety-one million, one hundred twelve thousand, four hundred ninety-two".