1808930780 has 12 divisors (see below), whose sum is σ = 3798754680. Its totient is φ = 723572304.

The previous prime is 1808930771. The next prime is 1808930791. The reversal of 1808930780 is 870398081.

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, 45223250 + ... + 45223289.

It is an arithmetic number, because the mean of its divisors is an integer number (316562890).

Almost surely, 2^1808930780 is an apocalyptic number.

1808930780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1808930780 is an abundant number, since it is smaller than the sum of its proper divisors (1989823900).

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

1808930780 is a wasteful number, since it uses less digits than its factorization.

1808930780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90446548 (or 90446546 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 1808930780 is about 42531.5268947636. The cubic root of 1808930780 is about 1218.4488887326.

The spelling of 1808930780 in words is "one billion, eight hundred eight million, nine hundred thirty thousand, seven hundred eighty".