18836825 has 18 divisors (see below), whose sum is σ = 27172926. Its totient is φ = 12915840.

The previous prime is 18836821. The next prime is 18836827. The reversal of 18836825 is 52863881.

It can be written as a sum of positive squares in 3 ways, for example, as 6635776 + 12201049 = 2576^2 + 3493^2 .

It is not a de Polignac number, because 18836825 - 2² = 18836821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18836821) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6464 + ... + 8913.

It is an arithmetic number, because the mean of its divisors is an integer number (1509607).

Almost surely, 2^18836825 is an apocalyptic number.

It is an amenable number.

18836825 is a deficient number, since it is larger than the sum of its proper divisors (8336101).

18836825 is a wasteful number, since it uses less digits than its factorization.

18836825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15401 (or 15389 counting only the distinct ones).

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

The square root of 18836825 is about 4340.1411267377. The cubic root of 18836825 is about 266.0740790906.

The spelling of 18836825 in words is "eighteen million, eight hundred thirty-six thousand, eight hundred twenty-five".