18290327 has 4 divisors (see below), whose sum is σ = 19953096. Its totient is φ = 16627560.

The previous prime is 18290303. The next prime is 18290339. The reversal of 18290327 is 72309281.

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

It is a cyclic number.

It is not a de Polignac number, because 18290327 - 2¹⁴ = 18273943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18290293 and 18290302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18290357) 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, 831368 + ... + 831389.

It is an arithmetic number, because the mean of its divisors is an integer number (4988274).

Almost surely, 2^18290327 is an apocalyptic number.

18290327 is a deficient number, since it is larger than the sum of its proper divisors (1662769).

18290327 is a wasteful number, since it uses less digits than its factorization.

18290327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662768.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 18290327 is about 4276.7191864793. The cubic root of 18290327 is about 263.4756532756.

It can be divided in two parts, 182 and 90327, that added together give a palindrome (90509).

The spelling of 18290327 in words is "eighteen million, two hundred ninety thousand, three hundred twenty-seven".