18463489 has 8 divisors (see below), whose sum is σ = 20633760. Its totient is φ = 16375200.

The previous prime is 18463483. The next prime is 18463531. The reversal of 18463489 is 98436481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18463489 - 2²³ = 10074881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18463483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20019 + ... + 20920.

It is an arithmetic number, because the mean of its divisors is an integer number (2579220).

Almost surely, 2^18463489 is an apocalyptic number.

It is an amenable number.

18463489 is a deficient number, since it is larger than the sum of its proper divisors (2170271).

18463489 is a wasteful number, since it uses less digits than its factorization.

18463489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40991.

The product of its digits is 165888, while the sum is 43.

The square root of 18463489 is about 4296.9162198023. The cubic root of 18463489 is about 264.3045202382.

It can be divided in two parts, 1846 and 3489, that added together give a palindrome (5335).

The spelling of 18463489 in words is "eighteen million, four hundred sixty-three thousand, four hundred eighty-nine".