18319485 has 8 divisors (see below), whose sum is σ = 29311200. Its totient is φ = 9770384.

The previous prime is 18319463. The next prime is 18319507. The reversal of 18319485 is 58491381.

It is an interprime number because it is at equal distance from previous prime (18319463) and next prime (18319507).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18319485 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610635 + ... + 610664.

It is an arithmetic number, because the mean of its divisors is an integer number (3663900).

Almost surely, 2^18319485 is an apocalyptic number.

18319485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18319485 is a deficient number, since it is larger than the sum of its proper divisors (10991715).

18319485 is a wasteful number, since it uses less digits than its factorization.

18319485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221307.

The product of its digits is 34560, while the sum is 39.

The square root of 18319485 is about 4280.1267504596. The cubic root of 18319485 is about 263.6155877946.

The spelling of 18319485 in words is "eighteen million, three hundred nineteen thousand, four hundred eighty-five".