2153243156 has 12 divisors (see below), whose sum is σ = 3898112820. Its totient is φ = 1039496640.

The previous prime is 2153243129. The next prime is 2153243161. The reversal of 2153243156 is 6513423512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1785907600 + 367335556 = 42260^2 + 19166^2 .

It is a congruent number.

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, 9281105 + ... + 9281336.

It is an arithmetic number, because the mean of its divisors is an integer number (324842735).

Almost surely, 2^2153243156 is an apocalyptic number.

It is an amenable number.

2153243156 is a deficient number, since it is larger than the sum of its proper divisors (1744869664).

2153243156 is a wasteful number, since it uses less digits than its factorization.

2153243156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18562474 (or 18562472 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 2153243156 is about 46403.0511496820. The cubic root of 2153243156 is about 1291.3115191445.

Adding to 2153243156 its reverse (6513423512), we get a palindrome (8666666668).

The spelling of 2153243156 in words is "two billion, one hundred fifty-three million, two hundred forty-three thousand, one hundred fifty-six".