18879462827 has 2 divisors, whose sum is σ = 18879462828. Its totient is φ = 18879462826.

The previous prime is 18879462821. The next prime is 18879462857. The reversal of 18879462827 is 72826497881.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18879462827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18879462827.

It is not a weakly prime, because it can be changed into another prime (18879462821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9439731413 + 9439731414.

It is an arithmetic number, because the mean of its divisors is an integer number (9439731414).

Almost surely, 2^18879462827 is an apocalyptic number.

18879462827 is a deficient number, since it is larger than the sum of its proper divisors (1).

18879462827 is an equidigital number, since it uses as much as digits as its factorization.

18879462827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21676032, while the sum is 62.

The spelling of 18879462827 in words is "eighteen billion, eight hundred seventy-nine million, four hundred sixty-two thousand, eight hundred twenty-seven".