18875513 has 8 divisors (see below), whose sum is σ = 19443840. Its totient is φ = 18310320.

The previous prime is 18875477. The next prime is 18875543. The reversal of 18875513 is 31557881.

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 18875513 - 2¹⁶ = 18809977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18875543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17648 + ... + 18686.

It is an arithmetic number, because the mean of its divisors is an integer number (2430480).

Almost surely, 2^18875513 is an apocalyptic number.

It is an amenable number.

18875513 is a deficient number, since it is larger than the sum of its proper divisors (568327).

18875513 is a wasteful number, since it uses less digits than its factorization.

18875513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567.

The product of its digits is 33600, while the sum is 38.

The square root of 18875513 is about 4344.5958385102. The cubic root of 18875513 is about 266.2561132116.

The spelling of 18875513 in words is "eighteen million, eight hundred seventy-five thousand, five hundred thirteen".