2156533234 has 8 divisors (see below), whose sum is σ = 3322226988. Its totient is φ = 1049124240.

The previous prime is 2156533229. The next prime is 2156533261. The reversal of 2156533234 is 4323356512.

It can be written as a sum of positive squares in 2 ways, for example, as 1685513025 + 471020209 = 41055^2 + 21703^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2156533234.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14571097 + ... + 14571244.

Almost surely, 2^2156533234 is an apocalyptic number.

2156533234 is a deficient number, since it is larger than the sum of its proper divisors (1165693754).

2156533234 is a wasteful number, since it uses less digits than its factorization.

2156533234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29142380.

The product of its digits is 64800, while the sum is 34.

The square root of 2156533234 is about 46438.4887135660. The cubic root of 2156533234 is about 1291.9688769513.

Adding to 2156533234 its reverse (4323356512), we get a palindrome (6479889746).

The spelling of 2156533234 in words is "two billion, one hundred fifty-six million, five hundred thirty-three thousand, two hundred thirty-four".