191164992 has 28 divisors (see below), whose sum is σ = 505791216. Its totient is φ = 63721600.

The previous prime is 191164973. The next prime is 191164997. The reversal of 191164992 is 299461191.

It is a happy number.

191164992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (191164997) 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, 497634 + ... + 498017.

It is an arithmetic number, because the mean of its divisors is an integer number (18063972).

Almost surely, 2^191164992 is an apocalyptic number.

191164992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191164992 is an abundant number, since it is smaller than the sum of its proper divisors (314626224).

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

191164992 is an equidigital number, since it uses as much as digits as its factorization.

191164992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995666 (or 995656 counting only the distinct ones).

The product of its digits is 34992, while the sum is 42.

The square root of 191164992 is about 13826.2428736081. The cubic root of 191164992 is about 576.0623003601.

The spelling of 191164992 in words is "one hundred ninety-one million, one hundred sixty-four thousand, nine hundred ninety-two".