18162361 has 8 divisors (see below), whose sum is σ = 20809664. Its totient is φ = 15528240.

The previous prime is 18162359. The next prime is 18162413. The reversal of 18162361 is 16326181.

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

It is not a de Polignac number, because 18162361 - 2¹ = 18162359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18162061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135 + ... + 6028.

It is an arithmetic number, because the mean of its divisors is an integer number (2601208).

Almost surely, 2^18162361 is an apocalyptic number.

It is an amenable number.

18162361 is a deficient number, since it is larger than the sum of its proper divisors (2647303).

18162361 is an equidigital number, since it uses as much as digits as its factorization.

18162361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6591.

The product of its digits is 1728, while the sum is 28.

The square root of 18162361 is about 4261.7321595802. The cubic root of 18162361 is about 262.8597564637.

The spelling of 18162361 in words is "eighteen million, one hundred sixty-two thousand, three hundred sixty-one".