18116345 has 16 divisors (see below), whose sum is σ = 23635920. Its totient is φ = 13250304.

The previous prime is 18116333. The next prime is 18116353. The reversal of 18116345 is 54361181.

It can be written as a sum of positive squares in 8 ways, for example, as 719104 + 17397241 = 848^2 + 4171^2 .

It is a cyclic number.

It is not a de Polignac number, because 18116345 - 2⁶ = 18116281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5807 + ... + 8363.

It is an arithmetic number, because the mean of its divisors is an integer number (1477245).

Almost surely, 2^18116345 is an apocalyptic number.

It is an amenable number.

18116345 is a deficient number, since it is larger than the sum of its proper divisors (5519575).

18116345 is a wasteful number, since it uses less digits than its factorization.

18116345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684.

The product of its digits is 2880, while the sum is 29.

The square root of 18116345 is about 4256.3299919062. The cubic root of 18116345 is about 262.6375756545.

The spelling of 18116345 in words is "eighteen million, one hundred sixteen thousand, three hundred forty-five".