18313709 has 8 divisors (see below), whose sum is σ = 19581120. Its totient is φ = 17067456.

The previous prime is 18313693. The next prime is 18313717. The reversal of 18313709 is 90731381.

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

It is not a de Polignac number, because 18313709 - 2⁴ = 18313693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18313759) 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, 3479 + ... + 6980.

It is an arithmetic number, because the mean of its divisors is an integer number (2447640).

Almost surely, 2^18313709 is an apocalyptic number.

It is an amenable number.

18313709 is a deficient number, since it is larger than the sum of its proper divisors (1267411).

18313709 is a wasteful number, since it uses less digits than its factorization.

18313709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10579.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 18313709 is about 4279.4519508928. The cubic root of 18313709 is about 263.5878795250.

The spelling of 18313709 in words is "eighteen million, three hundred thirteen thousand, seven hundred nine".