18346648 has 16 divisors (see below), whose sum is σ = 34723080. Its totient is φ = 9087168.

The previous prime is 18346633. The next prime is 18346649. The reversal of 18346648 is 84664381.

It is a self number, because there is not a number n which added to its sum of digits gives 18346648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18346649) 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, 9861 + ... + 11572.

Almost surely, 2^18346648 is an apocalyptic number.

It is an amenable number.

18346648 is a deficient number, since it is larger than the sum of its proper divisors (16376432).

18346648 is a wasteful number, since it uses less digits than its factorization.

18346648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21546 (or 21542 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 18346648 is about 4283.2987287837. The cubic root of 18346648 is about 263.7458144181.

The spelling of 18346648 in words is "eighteen million, three hundred forty-six thousand, six hundred forty-eight".