18681348 has 36 divisors (see below), whose sum is σ = 50708112. Its totient is φ = 5337360.

The previous prime is 18681343. The next prime is 18681349. The reversal of 18681348 is 84318681.

It is not an unprimeable number, because it can be changed into a prime (18681343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15298 + ... + 16473.

Almost surely, 2^18681348 is an apocalyptic number.

It is an amenable number.

18681348 is an abundant number, since it is smaller than the sum of its proper divisors (32026764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18681348 is a wasteful number, since it uses less digits than its factorization.

18681348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31792 (or 31783 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 18681348 is about 4322.1924991837. The cubic root of 18681348 is about 265.3400073796.

The spelling of 18681348 in words is "eighteen million, six hundred eighty-one thousand, three hundred forty-eight".