18825942 has 16 divisors (see below), whose sum is σ = 38269872. Its totient is φ = 6172320.

The previous prime is 18825923. The next prime is 18825943. The reversal of 18825942 is 24952881.

It is a self number, because there is not a number n which added to its sum of digits gives 18825942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18825943) 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, 25353 + ... + 26084.

It is an arithmetic number, because the mean of its divisors is an integer number (2391867).

Almost surely, 2^18825942 is an apocalyptic number.

18825942 is an abundant number, since it is smaller than the sum of its proper divisors (19443930).

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

18825942 is a wasteful number, since it uses less digits than its factorization.

18825942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51503.

The product of its digits is 46080, while the sum is 39.

The square root of 18825942 is about 4338.8871845209. The cubic root of 18825942 is about 266.0228276714.

The spelling of 18825942 in words is "eighteen million, eight hundred twenty-five thousand, nine hundred forty-two".