18380527 has 8 divisors (see below), whose sum is σ = 20593872. Its totient is φ = 16257600.

The previous prime is 18380497. The next prime is 18380539. The reversal of 18380527 is 72508381.

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

It is a cyclic number.

It is not a de Polignac number, because 18380527 - 2¹⁵ = 18347759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18380492 and 18380501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18380027) 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, 22174 + ... + 22987.

It is an arithmetic number, because the mean of its divisors is an integer number (2574234).

Almost surely, 2^18380527 is an apocalyptic number.

18380527 is a deficient number, since it is larger than the sum of its proper divisors (2213345).

18380527 is a wasteful number, since it uses less digits than its factorization.

18380527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45209.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 18380527 is about 4287.2516837713. The cubic root of 18380527 is about 263.9080593144.

It can be divided in two parts, 18 and 380527, that multiplied together give a palindrome (6849486).

The spelling of 18380527 in words is "eighteen million, three hundred eighty thousand, five hundred twenty-seven".