2156534366 has 32 divisors (see below), whose sum is σ = 3913367040. Its totient is φ = 871599456.

The previous prime is 2156534353. The next prime is 2156534377. The reversal of 2156534366 is 6634356512.

It is a Curzon number.

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, 44306 + ... + 79221.

It is an arithmetic number, because the mean of its divisors is an integer number (122292720).

Almost surely, 2^2156534366 is an apocalyptic number.

2156534366 is a deficient number, since it is larger than the sum of its proper divisors (1756832674).

2156534366 is a wasteful number, since it uses less digits than its factorization.

2156534366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123608.

The product of its digits is 388800, while the sum is 41.

The square root of 2156534366 is about 46438.5009017302. The cubic root of 2156534366 is about 1291.9691030099.

The spelling of 2156534366 in words is "two billion, one hundred fifty-six million, five hundred thirty-four thousand, three hundred sixty-six".