18885464 has 32 divisors (see below), whose sum is σ = 38495520. Its totient is φ = 8633856.

The previous prime is 18885457. The next prime is 18885469. The reversal of 18885464 is 46458881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18885469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10949 + ... + 12555.

It is an arithmetic number, because the mean of its divisors is an integer number (1202985).

Almost surely, 2^18885464 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 18885464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19247760).

18885464 is an abundant number, since it is smaller than the sum of its proper divisors (19610056).

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

18885464 is a wasteful number, since it uses less digits than its factorization.

18885464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739 (or 1735 counting only the distinct ones).

The product of its digits is 245760, while the sum is 44.

The square root of 18885464 is about 4345.7409034594. The cubic root of 18885464 is about 266.3028942646.

The spelling of 18885464 in words is "eighteen million, eight hundred eighty-five thousand, four hundred sixty-four".