191192247492 has 24 divisors (see below), whose sum is σ = 469594994400. Its totient is φ = 60376499136.

The previous prime is 191192247457. The next prime is 191192247497. The reversal of 191192247492 is 294742291191.

It is not an unprimeable number, because it can be changed into a prime (191192247497) 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 7 ways as a sum of consecutive naturals, for example, 419281017 + ... + 419281472.

It is an arithmetic number, because the mean of its divisors is an integer number (19566458100).

Almost surely, 2^191192247492 is an apocalyptic number.

191192247492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191192247492 is an abundant number, since it is smaller than the sum of its proper divisors (278402746908).

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

191192247492 is a wasteful number, since it uses less digits than its factorization.

191192247492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838562515 (or 838562513 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The spelling of 191192247492 in words is "one hundred ninety-one billion, one hundred ninety-two million, two hundred forty-seven thousand, four hundred ninety-two".