2193921974824 has 16 divisors (see below), whose sum is σ = 4117028869620. Its totient is φ = 1096047609600.

The previous prime is 2193921974807. The next prime is 2193921974891. The reversal of 2193921974824 is 4284791293912.

It can be written as a sum of positive squares in 2 ways, for example, as 1666965032100 + 526956942724 = 1291110^2 + 725918^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114162019 + ... + 114181234.

Almost surely, 2^{2193921974824} is an apocalyptic number.

It is an amenable number.

2193921974824 is a deficient number, since it is larger than the sum of its proper divisors (1923106894796).

2193921974824 is a wasteful number, since it uses less digits than its factorization.

2193921974824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228344460 (or 228344456 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 61.

The spelling of 2193921974824 in words is "two trillion, one hundred ninety-three billion, nine hundred twenty-one million, nine hundred seventy-four thousand, eight hundred twenty-four".