1820868882 has 16 divisors (see below), whose sum is σ = 4161986112. Its totient is φ = 520248240.

The previous prime is 1820868851. The next prime is 1820868893. The reversal of 1820868882 is 2888680281.

It is a happy 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, 21676969 + ... + 21677052.

It is an arithmetic number, because the mean of its divisors is an integer number (260124132).

Almost surely, 2^1820868882 is an apocalyptic number.

1820868882 is an abundant number, since it is smaller than the sum of its proper divisors (2341117230).

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

1820868882 is a wasteful number, since it uses less digits than its factorization.

1820868882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43354033.

The product of its (nonzero) digits is 786432, while the sum is 51.

The square root of 1820868882 is about 42671.6402543891. The cubic root of 1820868882 is about 1221.1234124918.

The spelling of 1820868882 in words is "one billion, eight hundred twenty million, eight hundred sixty-eight thousand, eight hundred eighty-two".