18460361 has 4 divisors (see below), whose sum is σ = 18650772. Its totient is φ = 18269952.

The previous prime is 18460319. The next prime is 18460363. The reversal of 18460361 is 16306481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3444736 + 15015625 = 1856^2 + 3875^2 .

It is a cyclic number.

It is not a de Polignac number, because 18460361 - 2¹⁸ = 18198217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18460363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95060 + ... + 95253.

It is an arithmetic number, because the mean of its divisors is an integer number (4662693).

Almost surely, 2^18460361 is an apocalyptic number.

It is an amenable number.

18460361 is a deficient number, since it is larger than the sum of its proper divisors (190411).

18460361 is an equidigital number, since it uses as much as digits as its factorization.

18460361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190410.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 18460361 is about 4296.5522224221. The cubic root of 18460361 is about 264.2895936402.

The spelling of 18460361 in words is "eighteen million, four hundred sixty thousand, three hundred sixty-one".