18313065 has 24 divisors (see below), whose sum is σ = 32839560. Its totient is φ = 9429504.

The previous prime is 18313027. The next prime is 18313067. The reversal of 18313065 is 56031381.

It can be written as a sum of positive squares in 4 ways, for example, as 242064 + 18071001 = 492^2 + 4251^2 .

It is not a de Polignac number, because 18313065 - 2⁸ = 18312809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18313067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5712 + ... + 8321.

It is an arithmetic number, because the mean of its divisors is an integer number (1368315).

Almost surely, 2^18313065 is an apocalyptic number.

18313065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18313065 is a deficient number, since it is larger than the sum of its proper divisors (14526495).

18313065 is a wasteful number, since it uses less digits than its factorization.

18313065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14073 (or 14070 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 18313065 is about 4279.3767069516. The cubic root of 18313065 is about 263.5847898070.

The spelling of 18313065 in words is "eighteen million, three hundred thirteen thousand, sixty-five".