1800232345 has 4 divisors (see below), whose sum is σ = 2160278820. Its totient is φ = 1440185872.

The previous prime is 1800232339. The next prime is 1800232361. The reversal of 1800232345 is 5432320081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 364504464 + 1435727881 = 19092^2 + 37891^2 .

It is a cyclic number.

It is not a de Polignac number, because 1800232345 - 2²³ = 1791843737 is a prime.

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, 180023230 + ... + 180023239.

It is an arithmetic number, because the mean of its divisors is an integer number (540069705).

Almost surely, 2^1800232345 is an apocalyptic number.

It is an amenable number.

1800232345 is a deficient number, since it is larger than the sum of its proper divisors (360046475).

1800232345 is an equidigital number, since it uses as much as digits as its factorization.

1800232345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360046474.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1800232345 is about 42429.1449949206. The cubic root of 1800232345 is about 1216.4927364637.

The spelling of 1800232345 in words is "one billion, eight hundred million, two hundred thirty-two thousand, three hundred forty-five".