2156888863 has 8 divisors (see below), whose sum is σ = 2162147040. Its totient is φ = 2151638880.

The previous prime is 2156888843. The next prime is 2156888869. The reversal of 2156888863 is 3688886512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2156888863 - 2⁹ = 2156888351 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 (2156888869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056798 + ... + 1058836.

It is an arithmetic number, because the mean of its divisors is an integer number (270268380).

Almost surely, 2^2156888863 is an apocalyptic number.

2156888863 is a deficient number, since it is larger than the sum of its proper divisors (5258177).

2156888863 is a wasteful number, since it uses less digits than its factorization.

2156888863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097.

The product of its digits is 4423680, while the sum is 55.

The square root of 2156888863 is about 46442.3175885959. The cubic root of 2156888863 is about 1292.0398915993.

The spelling of 2156888863 in words is "two billion, one hundred fifty-six million, eight hundred eighty-eight thousand, eight hundred sixty-three".