18879560247 has 8 divisors (see below), whose sum is σ = 25175708800. Its totient is φ = 12584892600.

The previous prime is 18879560243. The next prime is 18879560257. The reversal of 18879560247 is 74206597881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18879560247 - 2² = 18879560243 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 (18879560243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340129 + ... + 391722.

It is an arithmetic number, because the mean of its divisors is an integer number (3146963600).

Almost surely, 2^18879560247 is an apocalyptic number.

18879560247 is a deficient number, since it is larger than the sum of its proper divisors (6296148553).

18879560247 is an equidigital number, since it uses as much as digits as its factorization.

18879560247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740453.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 18879560247 in words is "eighteen billion, eight hundred seventy-nine million, five hundred sixty thousand, two hundred forty-seven".