2193439864 has 32 divisors (see below), whose sum is σ = 5127523200. Its totient is φ = 854586720.

The previous prime is 2193439861. The next prime is 2193439901. The reversal of 2193439864 is 4689343912.

2193439864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2193439864² = 9622356873968676992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193439861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1779774 + ... + 1781005.

It is an arithmetic number, because the mean of its divisors is an integer number (160235100).

Almost surely, 2^2193439864 is an apocalyptic number.

It is an amenable number.

2193439864 is an abundant number, since it is smaller than the sum of its proper divisors (2934083336).

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

2193439864 is a wasteful number, since it uses less digits than its factorization.

2193439864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560803 (or 3560799 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The square root of 2193439864 is about 46834.1741039596. The cubic root of 2193439864 is about 1299.2974239163.

The spelling of 2193439864 in words is "two billion, one hundred ninety-three million, four hundred thirty-nine thousand, eight hundred sixty-four".