18827345 has 8 divisors (see below), whose sum is σ = 22963560. Its totient is φ = 14814720.

The previous prime is 18827321. The next prime is 18827353. The reversal of 18827345 is 54372881.

It can be written as a sum of positive squares in 4 ways, for example, as 2238016 + 16589329 = 1496^2 + 4073^2 .

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

It is not a de Polignac number, because 18827345 - 2⁸ = 18827089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18827299 and 18827308.

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, 30560 + ... + 31169.

It is an arithmetic number, because the mean of its divisors is an integer number (2870445).

Almost surely, 2^18827345 is an apocalyptic number.

It is an amenable number.

18827345 is a deficient number, since it is larger than the sum of its proper divisors (4136215).

18827345 is an equidigital number, since it uses as much as digits as its factorization.

18827345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61795.

The product of its digits is 53760, while the sum is 38.

The square root of 18827345 is about 4339.0488589091. The cubic root of 18827345 is about 266.0294359420.

The spelling of 18827345 in words is "eighteen million, eight hundred twenty-seven thousand, three hundred forty-five".