2171885264 has 20 divisors (see below), whose sum is σ = 4209867456. Its totient is φ = 1085467872.

The previous prime is 2171885227. The next prime is 2171885281. The reversal of 2171885264 is 4625881712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9647 + ... + 66609.

Almost surely, 2^2171885264 is an apocalyptic number.

It is an amenable number.

2171885264 is a deficient number, since it is larger than the sum of its proper divisors (2037982192).

2171885264 is a wasteful number, since it uses less digits than its factorization.

2171885264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59354 (or 59348 counting only the distinct ones).

The product of its digits is 215040, while the sum is 44.

The square root of 2171885264 is about 46603.4898264068. The cubic root of 2171885264 is about 1295.0274068826.

The spelling of 2171885264 in words is "two billion, one hundred seventy-one million, eight hundred eighty-five thousand, two hundred sixty-four".