1808941530 has 48 divisors (see below), whose sum is σ = 4772027232. Its totient is φ = 438530400.

The previous prime is 1808941487. The next prime is 1808941549. The reversal of 1808941530 is 351498081.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245536 + ... + 252795.

It is an arithmetic number, because the mean of its divisors is an integer number (99417234).

Almost surely, 2^1808941530 is an apocalyptic number.

1808941530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1808941530 is an abundant number, since it is smaller than the sum of its proper divisors (2963085702).

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

1808941530 is a wasteful number, since it uses less digits than its factorization.

1808941530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498363 (or 498352 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 1808941530 is about 42531.6532714166. The cubic root of 1808941530 is about 1218.4513023683.

The spelling of 1808941530 in words is "one billion, eight hundred eight million, nine hundred forty-one thousand, five hundred thirty".