2081533900 has 18 divisors (see below), whose sum is σ = 4516928780. Its totient is φ = 832613520.

The previous prime is 2081533897. The next prime is 2081533921. The reversal of 2081533900 is 93351802.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10407570 + ... + 10407769.

Almost surely, 2^2081533900 is an apocalyptic number.

2081533900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2081533900 is an abundant number, since it is smaller than the sum of its proper divisors (2435394880).

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

2081533900 is a wasteful number, since it uses less digits than its factorization.

2081533900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20815353 (or 20815346 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2081533900 is about 45623.8303959674. The cubic root of 2081533900 is about 1276.8145686742.

The spelling of 2081533900 in words is "two billion, eighty-one million, five hundred thirty-three thousand, nine hundred".