18459948 has 48 divisors (see below), whose sum is σ = 47050976. Its totient is φ = 5598720.

The previous prime is 18459941. The next prime is 18459949. The reversal of 18459948 is 84995481.

It is a junction number, because it is equal to n+sod(n) for n = 18459897 and 18459906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18459941) 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, 10578 + ... + 12198.

Almost surely, 2^18459948 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 18459948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23525488).

18459948 is an abundant number, since it is smaller than the sum of its proper divisors (28591028).

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

18459948 is a wasteful number, since it uses less digits than its factorization.

18459948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714 (or 1712 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 18459948 is about 4296.5041603611. The cubic root of 18459948 is about 264.2876227070.

The spelling of 18459948 in words is "eighteen million, four hundred fifty-nine thousand, nine hundred forty-eight".