18825494 has 32 divisors (see below), whose sum is σ = 31539456. Its totient is φ = 8386560.

The previous prime is 18825493. The next prime is 18825497. The reversal of 18825494 is 49452881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18825493) 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 15 ways as a sum of consecutive naturals, for example, 55694 + ... + 56030.

It is an arithmetic number, because the mean of its divisors is an integer number (985608).

Almost surely, 2^18825494 is an apocalyptic number.

18825494 is a deficient number, since it is larger than the sum of its proper divisors (12713962).

18825494 is a wasteful number, since it uses less digits than its factorization.

18825494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440.

The product of its digits is 92160, while the sum is 41.

The square root of 18825494 is about 4338.8355580732. The cubic root of 18825494 is about 266.0207174773.

The spelling of 18825494 in words is "eighteen million, eight hundred twenty-five thousand, four hundred ninety-four".