18485964 has 72 divisors (see below), whose sum is σ = 53973920. Its totient is φ = 5225472.

The previous prime is 18485959. The next prime is 18485981. The reversal of 18485964 is 46958481.

18485964 is a `hidden beast` number, since 18 + 48 + 596 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27132 + ... + 27804.

Almost surely, 2^18485964 is an apocalyptic number.

18485964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18485964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26986960).

18485964 is an abundant number, since it is smaller than the sum of its proper divisors (35487956).

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

18485964 is a wasteful number, since it uses less digits than its factorization.

18485964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 794 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 18485964 is about 4299.5306720618. The cubic root of 18485964 is about 264.4117198296.

The spelling of 18485964 in words is "eighteen million, four hundred eighty-five thousand, nine hundred sixty-four".