18682645 has 8 divisors (see below), whose sum is σ = 22799520. Its totient is φ = 14692560.

The previous prime is 18682621. The next prime is 18682661. The reversal of 18682645 is 54628681.

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

It is not a de Polignac number, because 18682645 - 2²¹ = 16585493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18682598 and 18682607.

It is a congruent number.

It is an unprimeable number.

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, 31371 + ... + 31960.

It is an arithmetic number, because the mean of its divisors is an integer number (2849940).

Almost surely, 2^18682645 is an apocalyptic number.

It is an amenable number.

18682645 is a deficient number, since it is larger than the sum of its proper divisors (4116875).

18682645 is an equidigital number, since it uses as much as digits as its factorization.

18682645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63395.

The product of its digits is 92160, while the sum is 40.

The square root of 18682645 is about 4322.3425361718. The cubic root of 18682645 is about 265.3461478720.

The spelling of 18682645 in words is "eighteen million, six hundred eighty-two thousand, six hundred forty-five".