1812338313 has 16 divisors (see below), whose sum is σ = 2566977600. Its totient is φ = 1134129600.

The previous prime is 1812338309. The next prime is 1812338323. The reversal of 1812338313 is 3138332181.

It is not a de Polignac number, because 1812338313 - 2² = 1812338309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1812338303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139638 + ... + 152063.

It is an arithmetic number, because the mean of its divisors is an integer number (160436100).

Almost surely, 2^1812338313 is an apocalyptic number.

It is an amenable number.

1812338313 is a deficient number, since it is larger than the sum of its proper divisors (754639287).

1812338313 is a wasteful number, since it uses less digits than its factorization.

1812338313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291832.

The product of its digits is 10368, while the sum is 33.

The square root of 1812338313 is about 42571.5669549525. The cubic root of 1812338313 is about 1219.2134841405.

The spelling of 1812338313 in words is "one billion, eight hundred twelve million, three hundred thirty-eight thousand, three hundred thirteen".