1821080850 has 24 divisors (see below), whose sum is σ = 4516280880. Its totient is φ = 485621520.

The previous prime is 1821080827. The next prime is 1821080869. The reversal of 1821080850 is 580801281.

1821080850 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6070120 + ... + 6070419.

It is an arithmetic number, because the mean of its divisors is an integer number (188178370).

Almost surely, 2^1821080850 is an apocalyptic number.

1821080850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1821080850 is an abundant number, since it is smaller than the sum of its proper divisors (2695200030).

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

1821080850 is a wasteful number, since it uses less digits than its factorization.

1821080850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12140554 (or 12140549 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 33.

The square root of 1821080850 is about 42674.1238925886. The cubic root of 1821080850 is about 1221.1707944582.

The spelling of 1821080850 in words is "one billion, eight hundred twenty-one million, eighty thousand, eight hundred fifty".