2156714863 has 4 divisors (see below), whose sum is σ = 2158056880. Its totient is φ = 2155372848.

The previous prime is 2156714821. The next prime is 2156714869. The reversal of 2156714863 is 3684176512.

2156714863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2156714863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156714869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668595 + ... + 671812.

It is an arithmetic number, because the mean of its divisors is an integer number (539514220).

Almost surely, 2^2156714863 is an apocalyptic number.

2156714863 is a deficient number, since it is larger than the sum of its proper divisors (1342017).

2156714863 is a wasteful number, since it uses less digits than its factorization.

2156714863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342016.

The product of its digits is 241920, while the sum is 43.

The square root of 2156714863 is about 46440.4442592876. Note that the first 3 decimals coincide. The cubic root of 2156714863 is about 1292.0051469584.

The spelling of 2156714863 in words is "two billion, one hundred fifty-six million, seven hundred fourteen thousand, eight hundred sixty-three".