18828479 has 2 divisors, whose sum is σ = 18828480. Its totient is φ = 18828478.

The previous prime is 18828463. The next prime is 18828517. The reversal of 18828479 is 97482881.

It is a weak prime.

It is an emirp because it is prime and its reverse (97482881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18828479 - 2⁴ = 18828463 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18828179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9414239 + 9414240.

It is an arithmetic number, because the mean of its divisors is an integer number (9414240).

Almost surely, 2^18828479 is an apocalyptic number.

18828479 is a deficient number, since it is larger than the sum of its proper divisors (1).

18828479 is an equidigital number, since it uses as much as digits as its factorization.

18828479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 47.

The square root of 18828479 is about 4339.1795307408. The cubic root of 18828479 is about 266.0347769557.

The spelling of 18828479 in words is "eighteen million, eight hundred twenty-eight thousand, four hundred seventy-nine".