18008514 has 16 divisors (see below), whose sum is σ = 40019040. Its totient is φ = 6002820.

The previous prime is 18008503. The next prime is 18008519. The reversal of 18008514 is 41580081.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18008519) 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, 166692 + ... + 166799.

It is an arithmetic number, because the mean of its divisors is an integer number (2501190).

Almost surely, 2^18008514 is an apocalyptic number.

18008514 is an abundant number, since it is smaller than the sum of its proper divisors (22010526).

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

18008514 is a wasteful number, since it uses less digits than its factorization.

18008514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333502 (or 333496 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 18008514 is about 4243.6439530196. The cubic root of 18008514 is about 262.1154532637.

Adding to 18008514 its reverse (41580081), we get a palindrome (59588595).

The spelling of 18008514 in words is "eighteen million, eight thousand, five hundred fourteen".