18698464 has 48 divisors (see below), whose sum is σ = 38320128. Its totient is φ = 8975232.

The previous prime is 18698461. The next prime is 18698473. The reversal of 18698464 is 46489681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18698461) 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, 147169 + ... + 147295.

It is an arithmetic number, because the mean of its divisors is an integer number (798336).

Almost surely, 2^18698464 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 18698464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19160064).

18698464 is an abundant number, since it is smaller than the sum of its proper divisors (19621664).

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

18698464 is a wasteful number, since it uses less digits than its factorization.

18698464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 279 counting only the distinct ones).

The product of its digits is 331776, while the sum is 46.

The square root of 18698464 is about 4324.1720594814. The cubic root of 18698464 is about 265.4210181873.

The spelling of 18698464 in words is "eighteen million, six hundred ninety-eight thousand, four hundred sixty-four".