18485013 has 16 divisors (see below), whose sum is σ = 25373376. Its totient is φ = 11965440.

The previous prime is 18485011. The next prime is 18485039. The reversal of 18485013 is 31058481.

It is not a de Polignac number, because 18485013 - 2¹ = 18485011 is a prime.

It is a super-2 number, since 2×18485013² = 683391411220338, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18485011) 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 15 ways as a sum of consecutive naturals, for example, 14581 + ... + 15797.

It is an arithmetic number, because the mean of its divisors is an integer number (1585836).

Almost surely, 2^18485013 is an apocalyptic number.

It is an amenable number.

18485013 is a deficient number, since it is larger than the sum of its proper divisors (6888363).

18485013 is a wasteful number, since it uses less digits than its factorization.

18485013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18485013 is about 4299.4200771732. The cubic root of 18485013 is about 264.4071855812.

The spelling of 18485013 in words is "eighteen million, four hundred eighty-five thousand, thirteen".