12192891974 has 16 divisors (see below), whose sum is σ = 19407997440. Its totient is φ = 5732544840.

The previous prime is 12192891967. The next prime is 12192891989. The reversal of 12192891974 is 47919829121.

It is a happy number.

It is a super-2 number, since 2×12192891974² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243582 + ... + 2249009.

It is an arithmetic number, because the mean of its divisors is an integer number (1212999840).

Almost surely, 2^12192891974 is an apocalyptic number.

12192891974 is a deficient number, since it is larger than the sum of its proper divisors (7215105466).

12192891974 is a wasteful number, since it uses less digits than its factorization.

12192891974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492675.

The product of its digits is 653184, while the sum is 53.

The spelling of 12192891974 in words is "twelve billion, one hundred ninety-two million, eight hundred ninety-one thousand, nine hundred seventy-four".