18579948463 has 2 divisors, whose sum is σ = 18579948464. Its totient is φ = 18579948462.

The previous prime is 18579948419. The next prime is 18579948467. The reversal of 18579948463 is 36484997581.

It is a strong prime.

It is an emirp because it is prime and its reverse (36484997581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18579948463 - 2⁹ = 18579947951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18579948395 and 18579948404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18579948467) 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 as a sum of consecutive naturals, namely, 9289974231 + 9289974232.

It is an arithmetic number, because the mean of its divisors is an integer number (9289974232).

Almost surely, 2^18579948463 is an apocalyptic number.

18579948463 is a deficient number, since it is larger than the sum of its proper divisors (1).

18579948463 is an equidigital number, since it uses as much as digits as its factorization.

18579948463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 64.

The spelling of 18579948463 in words is "eighteen billion, five hundred seventy-nine million, nine hundred forty-eight thousand, four hundred sixty-three".