2133021808 has 20 divisors (see below), whose sum is σ = 4202777880. Its totient is φ = 1048433984.

The previous prime is 2133021797. The next prime is 2133021809. The reversal of 2133021808 is 8081203312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133021809) 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, 1128835 + ... + 1130722.

It is an arithmetic number, because the mean of its divisors is an integer number (210138894).

Almost surely, 2^2133021808 is an apocalyptic number.

It is an amenable number.

2133021808 is a deficient number, since it is larger than the sum of its proper divisors (2069756072).

2133021808 is a wasteful number, since it uses less digits than its factorization.

2133021808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259624 (or 2259618 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2133021808 is about 46184.6490513894. The cubic root of 2133021808 is about 1287.2565150900.

The spelling of 2133021808 in words is "two billion, one hundred thirty-three million, twenty-one thousand, eight hundred eight".