2158870716 has 36 divisors (see below), whose sum is σ = 5496418200. Its totient is φ = 714444768.

The previous prime is 2158870697. The next prime is 2158870729. The reversal of 2158870716 is 6170788512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 210711 + ... + 220718.

Almost surely, 2^2158870716 is an apocalyptic number.

It is an amenable number.

2158870716 is an abundant number, since it is smaller than the sum of its proper divisors (3337547484).

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

2158870716 is a wasteful number, since it uses less digits than its factorization.

2158870716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431578 (or 431573 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The square root of 2158870716 is about 46463.6494046690. The cubic root of 2158870716 is about 1292.4354998759.

The spelling of 2158870716 in words is "two billion, one hundred fifty-eight million, eight hundred seventy thousand, seven hundred sixteen".