18610648 has 64 divisors (see below), whose sum is σ = 42845760. Its totient is φ = 7397376.

The previous prime is 18610643. The next prime is 18610649. The reversal of 18610648 is 84601681.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18610643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107490 + ... + 107662.

It is an arithmetic number, because the mean of its divisors is an integer number (669465).

Almost surely, 2^18610648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18610648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21422880).

18610648 is an abundant number, since it is smaller than the sum of its proper divisors (24235112).

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

18610648 is a wasteful number, since it uses less digits than its factorization.

18610648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 18610648 is about 4314.0060268850. The cubic root of 18610648 is about 265.0048557316.

The spelling of 18610648 in words is "eighteen million, six hundred ten thousand, six hundred forty-eight".