2133661208 has 16 divisors (see below), whose sum is σ = 4572131280. Its totient is φ = 914426208.

The previous prime is 2133661147. The next prime is 2133661219. The reversal of 2133661208 is 8021663312.

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, 19050491 + ... + 19050602.

It is an arithmetic number, because the mean of its divisors is an integer number (285758205).

Almost surely, 2^2133661208 is an apocalyptic number.

2133661208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2133661208 is an abundant number, since it is smaller than the sum of its proper divisors (2438470072).

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

2133661208 is a wasteful number, since it uses less digits than its factorization.

2133661208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38101106 (or 38101102 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2133661208 is about 46191.5707461870. The cubic root of 2133661208 is about 1287.3851259938.

The spelling of 2133661208 in words is "two billion, one hundred thirty-three million, six hundred sixty-one thousand, two hundred eight".