2153643512 has 16 divisors (see below), whose sum is σ = 4060643400. Its totient is φ = 1070805280.

The previous prime is 2153643493. The next prime is 2153643517. The reversal of 2153643512 is 2153463512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153643517) 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, 750539 + ... + 753402.

Almost surely, 2^2153643512 is an apocalyptic number.

It is an amenable number.

2153643512 is a deficient number, since it is larger than the sum of its proper divisors (1906999888).

2153643512 is a wasteful number, since it uses less digits than its factorization.

2153643512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504126 (or 1504122 counting only the distinct ones).

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

The square root of 2153643512 is about 46407.3648465413. The cubic root of 2153643512 is about 1291.3915460681.

The spelling of 2153643512 in words is "two billion, one hundred fifty-three million, six hundred forty-three thousand, five hundred twelve".