18069819959 has 2 divisors, whose sum is σ = 18069819960. Its totient is φ = 18069819958.

The previous prime is 18069819893. The next prime is 18069820003. The reversal of 18069819959 is 95991896081.

It is a strong prime.

It is an emirp because it is prime and its reverse (95991896081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18069819959 - 2²⁴ = 18053042743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18069819895 and 18069819904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18069819359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9034909979 + 9034909980.

It is an arithmetic number, because the mean of its divisors is an integer number (9034909980).

Almost surely, 2^18069819959 is an apocalyptic number.

18069819959 is a deficient number, since it is larger than the sum of its proper divisors (1).

18069819959 is an equidigital number, since it uses as much as digits as its factorization.

18069819959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12597120, while the sum is 65.

The spelling of 18069819959 in words is "eighteen billion, sixty-nine million, eight hundred nineteen thousand, nine hundred fifty-nine".