18260880479 has 2 divisors, whose sum is σ = 18260880480. Its totient is φ = 18260880478.

The previous prime is 18260880461. The next prime is 18260880529. The reversal of 18260880479 is 97408806281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18260880479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18260880479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18260880409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9130440239 + 9130440240.

It is an arithmetic number, because the mean of its divisors is an integer number (9130440240).

Almost surely, 2^18260880479 is an apocalyptic number.

18260880479 is a deficient number, since it is larger than the sum of its proper divisors (1).

18260880479 is an equidigital number, since it uses as much as digits as its factorization.

18260880479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 18260880479 in words is "eighteen billion, two hundred sixty million, eight hundred eighty thousand, four hundred seventy-nine".