18825790 has 8 divisors (see below), whose sum is σ = 33886440. Its totient is φ = 7530312.

The previous prime is 18825769. The next prime is 18825797. The reversal of 18825790 is 9752881.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18825797) 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 3 ways as a sum of consecutive naturals, for example, 941280 + ... + 941299.

It is an arithmetic number, because the mean of its divisors is an integer number (4235805).

Almost surely, 2^18825790 is an apocalyptic number.

18825790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18825790 is a deficient number, since it is larger than the sum of its proper divisors (15060650).

18825790 is a wasteful number, since it uses less digits than its factorization.

18825790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882586.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 18825790 is about 4338.8696684736. The cubic root of 18825790 is about 266.0221117164.

The spelling of 18825790 in words is "eighteen million, eight hundred twenty-five thousand, seven hundred ninety".