1974384864 has 72 divisors (see below), whose sum is σ = 5691630672. Its totient is φ = 649105920.

The previous prime is 1974384833. The next prime is 1974384887. The reversal of 1974384864 is 4684834791.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1974384864.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 25932 + ... + 67979.

It is an arithmetic number, because the mean of its divisors is an integer number (79050426).

Almost surely, 2^1974384864 is an apocalyptic number.

It is an amenable number.

1974384864 is an abundant number, since it is smaller than the sum of its proper divisors (3717245808).

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

1974384864 is a wasteful number, since it uses less digits than its factorization.

1974384864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94000 (or 93989 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 1974384864 is about 44434.0507268919. The cubic root of 1974384864 is about 1254.5190802956.

The spelling of 1974384864 in words is "one billion, nine hundred seventy-four million, three hundred eighty-four thousand, eight hundred sixty-four".