18162065 has 8 divisors (see below), whose sum is σ = 22742208. Its totient is φ = 13897840.

The previous prime is 18162061. The next prime is 18162071. The reversal of 18162065 is 56026181.

It is a happy number.

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

It is not a de Polignac number, because 18162065 - 2² = 18162061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18162061) 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, 78851 + ... + 79080.

It is an arithmetic number, because the mean of its divisors is an integer number (2842776).

Almost surely, 2^18162065 is an apocalyptic number.

It is an amenable number.

18162065 is a deficient number, since it is larger than the sum of its proper divisors (4580143).

18162065 is a wasteful number, since it uses less digits than its factorization.

18162065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157959.

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

The square root of 18162065 is about 4261.6974317753. The cubic root of 18162065 is about 262.8583284755.

The spelling of 18162065 in words is "eighteen million, one hundred sixty-two thousand, sixty-five".