1321974168 has 32 divisors (see below), whose sum is σ = 3411548160. Its totient is φ = 426443040.

The previous prime is 1321974161. The next prime is 1321974169. The reversal of 1321974168 is 8614791231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321974161) 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, 887680 + ... + 889167.

It is an arithmetic number, because the mean of its divisors is an integer number (106610880).

Almost surely, 2^1321974168 is an apocalyptic number.

It is an amenable number.

1321974168 is an abundant number, since it is smaller than the sum of its proper divisors (2089573992).

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

1321974168 is a wasteful number, since it uses less digits than its factorization.

1321974168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776887 (or 1776883 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 1321974168 is about 36358.9626914740. The cubic root of 1321974168 is about 1097.5079032160.

The spelling of 1321974168 in words is "one billion, three hundred twenty-one million, nine hundred seventy-four thousand, one hundred sixty-eight".