18828513 has 24 divisors (see below), whose sum is σ = 30962880. Its totient is φ = 10913760.

The previous prime is 18828479. The next prime is 18828517. The reversal of 18828513 is 31582881.

It is not a de Polignac number, because 18828513 - 2⁹ = 18828001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18828517) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1858 + ... + 6411.

It is an arithmetic number, because the mean of its divisors is an integer number (1290120).

Almost surely, 2^18828513 is an apocalyptic number.

It is an amenable number.

18828513 is a deficient number, since it is larger than the sum of its proper divisors (12134367).

18828513 is a wasteful number, since it uses less digits than its factorization.

18828513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8309 (or 8306 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 18828513 is about 4339.1834485304. The cubic root of 18828513 is about 266.0349370886.

The spelling of 18828513 in words is "eighteen million, eight hundred twenty-eight thousand, five hundred thirteen".