1805232140 has 12 divisors (see below), whose sum is σ = 3790987536. Its totient is φ = 722092848.

The previous prime is 1805232139. The next prime is 1805232151. The reversal of 1805232140 is 412325081.

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, 45130784 + ... + 45130823.

It is an arithmetic number, because the mean of its divisors is an integer number (315915628).

Almost surely, 2^1805232140 is an apocalyptic number.

1805232140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1805232140 is an abundant number, since it is smaller than the sum of its proper divisors (1985755396).

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

1805232140 is a wasteful number, since it uses less digits than its factorization.

1805232140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90261616 (or 90261614 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1805232140 is about 42488.0234889786. The cubic root of 1805232140 is about 1217.6178860900.

The spelling of 1805232140 in words is "one billion, eight hundred five million, two hundred thirty-two thousand, one hundred forty".