2133651640 has 32 divisors (see below), whose sum is σ = 5083112880. Its totient is φ = 803256832.

The previous prime is 2133651631. The next prime is 2133651659. The reversal of 2133651640 is 461563312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568182 + ... + 1569541.

Almost surely, 2^2133651640 is an apocalyptic number.

2133651640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133651640 is an abundant number, since it is smaller than the sum of its proper divisors (2949461240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2133651640 is a wasteful number, since it uses less digits than its factorization.

2133651640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3137751 (or 3137747 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2133651640 is about 46191.4671773911. The cubic root of 2133651640 is about 1287.3832016459.

The spelling of 2133651640 in words is "two billion, one hundred thirty-three million, six hundred fifty-one thousand, six hundred forty".