18298980827 has 2 divisors, whose sum is σ = 18298980828. Its totient is φ = 18298980826.

The previous prime is 18298980823. The next prime is 18298980841. The reversal of 18298980827 is 72808989281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18298980827 - 2² = 18298980823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18298980827.

It is not a weakly prime, because it can be changed into another prime (18298980823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9149490413 + 9149490414.

It is an arithmetic number, because the mean of its divisors is an integer number (9149490414).

Almost surely, 2^18298980827 is an apocalyptic number.

18298980827 is a deficient number, since it is larger than the sum of its proper divisors (1).

18298980827 is an equidigital number, since it uses as much as digits as its factorization.

18298980827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 62.

The spelling of 18298980827 in words is "eighteen billion, two hundred ninety-eight million, nine hundred eighty thousand, eight hundred twenty-seven".