18490327 has 4 divisors (see below), whose sum is σ = 18502056. Its totient is φ = 18478600.

The previous prime is 18490319. The next prime is 18490391. The reversal of 18490327 is 72309481.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 72309481 = 2069 ⋅34949.

It is a cyclic number.

It is not a de Polignac number, because 18490327 - 2³ = 18490319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18490292 and 18490301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18490397) 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, 3049 + ... + 6802.

It is an arithmetic number, because the mean of its divisors is an integer number (4625514).

Almost surely, 2^18490327 is an apocalyptic number.

18490327 is a deficient number, since it is larger than the sum of its proper divisors (11729).

18490327 is an equidigital number, since it uses as much as digits as its factorization.

18490327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11728.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 18490327 is about 4300.0380230877. The cubic root of 18490327 is about 264.4325200719.

The spelling of 18490327 in words is "eighteen million, four hundred ninety thousand, three hundred twenty-seven".