1818336313 has 8 divisors (see below), whose sum is σ = 1861586496. Its totient is φ = 1775130000.

The previous prime is 1818336287. The next prime is 1818336379. The reversal of 1818336313 is 3136338181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1818336313 - 2¹⁷ = 1818205241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1818336913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82188 + ... + 101938.

It is an arithmetic number, because the mean of its divisors is an integer number (232698312).

Almost surely, 2^1818336313 is an apocalyptic number.

It is an amenable number.

1818336313 is a deficient number, since it is larger than the sum of its proper divisors (43250183).

1818336313 is a wasteful number, since it uses less digits than its factorization.

1818336313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21935.

The product of its digits is 31104, while the sum is 37.

The square root of 1818336313 is about 42641.9548449646. The cubic root of 1818336313 is about 1220.5570136299.

The spelling of 1818336313 in words is "one billion, eight hundred eighteen million, three hundred thirty-six thousand, three hundred thirteen".