2173917885 has 16 divisors (see below), whose sum is σ = 3479210496. Its totient is φ = 1159108928.

The previous prime is 2173917829. The next prime is 2173917901. The reversal of 2173917885 is 5887193712.

2173917885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2173917885 - 2⁶ = 2173917821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44347 + ... + 79463.

It is an arithmetic number, because the mean of its divisors is an integer number (217450656).

Almost surely, 2^2173917885 is an apocalyptic number.

It is an amenable number.

2173917885 is a deficient number, since it is larger than the sum of its proper divisors (1305292611).

2173917885 is a wasteful number, since it uses less digits than its factorization.

2173917885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39252.

The product of its digits is 846720, while the sum is 51.

The square root of 2173917885 is about 46625.2923315232. The cubic root of 2173917885 is about 1295.4312770750.

The spelling of 2173917885 in words is "two billion, one hundred seventy-three million, nine hundred seventeen thousand, eight hundred eighty-five".