18818560 has 40 divisors (see below), whose sum is σ = 45126576. Its totient is φ = 7526400.

The previous prime is 18818539. The next prime is 18818567. The reversal of 18818560 is 6581881.

18818560 is nontrivially palindromic in base 3.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18818567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116 + ... + 6235.

Almost surely, 2^18818560 is an apocalyptic number.

18818560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18818560 is an abundant number, since it is smaller than the sum of its proper divisors (26308016).

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

18818560 is an frugal number, since it uses more digits than its factorization.

18818560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7374 (or 7358 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 18818560 is about 4338.0364221615. The cubic root of 18818560 is about 265.9880523022.

The spelling of 18818560 in words is "eighteen million, eight hundred eighteen thousand, five hundred sixty".