18825826 has 8 divisors (see below), whose sum is σ = 28498140. Its totient is φ = 9326448.

The previous prime is 18825823. The next prime is 18825839. The reversal of 18825826 is 62852881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18105025 + 720801 = 4255^2 + 849^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18825823) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 42961 + ... + 43396.

Almost surely, 2^18825826 is an apocalyptic number.

18825826 is a deficient number, since it is larger than the sum of its proper divisors (9672314).

18825826 is a wasteful number, since it uses less digits than its factorization.

18825826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86468.

The product of its digits is 61440, while the sum is 40.

The square root of 18825826 is about 4338.8738170175. The cubic root of 18825826 is about 266.0222812851.

The spelling of 18825826 in words is "eighteen million, eight hundred twenty-five thousand, eight hundred twenty-six".