18826842 has 16 divisors (see below), whose sum is σ = 37769472. Its totient is φ = 6256320.

The previous prime is 18826813. The next prime is 18826849. The reversal of 18826842 is 24862881.

It is a self number, because there is not a number n which added to its sum of digits gives 18826842.

It is not an unprimeable number, because it can be changed into a prime (18826849) 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 7 ways as a sum of consecutive naturals, for example, 2634 + ... + 6677.

It is an arithmetic number, because the mean of its divisors is an integer number (2360592).

Almost surely, 2^18826842 is an apocalyptic number.

18826842 is an abundant number, since it is smaller than the sum of its proper divisors (18942630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18826842 is a wasteful number, since it uses less digits than its factorization.

18826842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9653.

The product of its digits is 49152, while the sum is 39.

The square root of 18826842 is about 4338.9908965104. The cubic root of 18826842 is about 266.0270667993.

The spelling of 18826842 in words is "eighteen million, eight hundred twenty-six thousand, eight hundred forty-two".