1813468865 has 48 divisors (see below), whose sum is σ = 2417216256. Its totient is φ = 1305158400.

The previous prime is 1813468841. The next prime is 1813468871. The reversal of 1813468865 is 5688643181.

It is not a de Polignac number, because 1813468865 - 2⁸ = 1813468609 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10019075 + ... + 10019255.

It is an arithmetic number, because the mean of its divisors is an integer number (50358672).

Almost surely, 2^1813468865 is an apocalyptic number.

It is an amenable number.

1813468865 is a deficient number, since it is larger than the sum of its proper divisors (603747391).

1813468865 is a wasteful number, since it uses less digits than its factorization.

1813468865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 437 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 1813468865 is about 42584.8431369660. The cubic root of 1813468865 is about 1219.4669500113.

The spelling of 1813468865 in words is "one billion, eight hundred thirteen million, four hundred sixty-eight thousand, eight hundred sixty-five".