2173932864 has 112 divisors (see below), whose sum is σ = 6404457600. Its totient is φ = 723115008.

The previous prime is 2173932857. The next prime is 2173932869. The reversal of 2173932864 is 4682393712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173932869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1065157 + ... + 1067195.

Almost surely, 2^2173932864 is an apocalyptic number.

2173932864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2173932864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3202228800).

2173932864 is an abundant number, since it is smaller than the sum of its proper divisors (4230524736).

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

2173932864 is a wasteful number, since it uses less digits than its factorization.

2173932864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677 (or 2661 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 2173932864 is about 46625.4529629472. The cubic root of 2173932864 is about 1295.4342523822.

The spelling of 2173932864 in words is "two billion, one hundred seventy-three million, nine hundred thirty-two thousand, eight hundred sixty-four".