18108948 has 96 divisors (see below), whose sum is σ = 50746752. Its totient is φ = 4953600.

The previous prime is 18108943. The next prime is 18108949. The reversal of 18108948 is 84980181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18108943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104590 + ... + 104762.

It is an arithmetic number, because the mean of its divisors is an integer number (528612).

Almost surely, 2^18108948 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 18108948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25373376).

18108948 is an abundant number, since it is smaller than the sum of its proper divisors (32637804).

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

18108948 is a wasteful number, since it uses less digits than its factorization.

18108948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 18108948 is about 4255.4609621050. The cubic root of 18108948 is about 262.6018253488.

The spelling of 18108948 in words is "eighteen million, one hundred eight thousand, nine hundred forty-eight".