18632313 has 12 divisors (see below), whose sum is σ = 30758208. Its totient is φ = 10647000.

The previous prime is 18632303. The next prime is 18632329. The reversal of 18632313 is 31323681.

It is a happy number.

18632313 is a `hidden beast` number, since 18 + 632 + 3 + 13 = 666.

It is not a de Polignac number, because 18632313 - 2¹² = 18628217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18632303) 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 11 ways as a sum of consecutive naturals, for example, 147813 + ... + 147938.

It is an arithmetic number, because the mean of its divisors is an integer number (2563184).

Almost surely, 2^18632313 is an apocalyptic number.

It is an amenable number.

18632313 is a deficient number, since it is larger than the sum of its proper divisors (12125895).

18632313 is a wasteful number, since it uses less digits than its factorization.

18632313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295764 (or 295761 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 18632313 is about 4316.5163036875. The cubic root of 18632313 is about 265.1076482078.

Adding to 18632313 its reverse (31323681), we get a palindrome (49955994).

The spelling of 18632313 in words is "eighteen million, six hundred thirty-two thousand, three hundred thirteen".