12191874 has 8 divisors (see below), whose sum is σ = 24383760. Its totient is φ = 4063956.

The previous prime is 12191849. The next prime is 12191899. The reversal of 12191874 is 47819121.

It is an interprime number because it is at equal distance from previous prime (12191849) and next prime (12191899).

It is a sphenic number, since it is the product of 3 distinct primes.

12191874 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015984 + ... + 1015995.

It is an arithmetic number, because the mean of its divisors is an integer number (3047970).

Almost surely, 2^12191874 is an apocalyptic number.

12191874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12191874 is a wasteful number, since it uses less digits than its factorization.

12191874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031984.

The product of its digits is 4032, while the sum is 33.

The square root of 12191874 is about 3491.6864120365. The cubic root of 12191874 is about 230.1566292916.

The spelling of 12191874 in words is "twelve million, one hundred ninety-one thousand, eight hundred seventy-four".