2133918820 has 24 divisors (see below), whose sum is σ = 4888614528. Its totient is φ = 775970400.

The previous prime is 2133918799. The next prime is 2133918881. The reversal of 2133918820 is 288193312.

It is a self number, because there is not a number n which added to its sum of digits gives 2133918820.

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, 4849596 + ... + 4850035.

It is an arithmetic number, because the mean of its divisors is an integer number (203692272).

Almost surely, 2^2133918820 is an apocalyptic number.

2133918820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133918820 is an abundant number, since it is smaller than the sum of its proper divisors (2754695708).

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

2133918820 is a wasteful number, since it uses less digits than its factorization.

2133918820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9699651 (or 9699649 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 2133918820 is about 46194.3591794496. The cubic root of 2133918820 is about 1287.4369356109.

The spelling of 2133918820 in words is "two billion, one hundred thirty-three million, nine hundred eighteen thousand, eight hundred twenty".