18875479 has 8 divisors (see below), whose sum is σ = 22510080. Its totient is φ = 15475416.

The previous prime is 18875477. The next prime is 18875543. The reversal of 18875479 is 97457881.

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 18875479 - 2¹ = 18875477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18875477) 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, 58459 + ... + 58780.

It is an arithmetic number, because the mean of its divisors is an integer number (2813760).

Almost surely, 2^18875479 is an apocalyptic number.

18875479 is a deficient number, since it is larger than the sum of its proper divisors (3634601).

18875479 is a wasteful number, since it uses less digits than its factorization.

18875479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117269.

The product of its digits is 564480, while the sum is 49.

The square root of 18875479 is about 4344.5919256013. The cubic root of 18875479 is about 266.2559533447.

The spelling of 18875479 in words is "eighteen million, eight hundred seventy-five thousand, four hundred seventy-nine".