18675013 has 4 divisors (see below), whose sum is σ = 21342880. Its totient is φ = 16007148.

The previous prime is 18674987. The next prime is 18675053. The reversal of 18675013 is 31057681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18675013 - 2⁹ = 18674501 is a prime.

It is a super-2 number, since 2×18675013² = 697512221100338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18675053) 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 3 ways as a sum of consecutive naturals, for example, 1333923 + ... + 1333936.

It is an arithmetic number, because the mean of its divisors is an integer number (5335720).

Almost surely, 2^18675013 is an apocalyptic number.

It is an amenable number.

18675013 is a deficient number, since it is larger than the sum of its proper divisors (2667867).

18675013 is an equidigital number, since it uses as much as digits as its factorization.

18675013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667866.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 18675013 is about 4321.4595913881. The cubic root of 18675013 is about 265.3100109899.

The spelling of 18675013 in words is "eighteen million, six hundred seventy-five thousand, thirteen".