361818913 has 2 divisors, whose sum is σ = 361818914. Its totient is φ = 361818912.

The previous prime is 361818907. The next prime is 361818929. The reversal of 361818913 is 319818163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341954064 + 19864849 = 18492^2 + 4457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361818913 is a prime.

It is not a weakly prime, because it can be changed into another prime (361818983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180909456 + 180909457.

It is an arithmetic number, because the mean of its divisors is an integer number (180909457).

Almost surely, 2^361818913 is an apocalyptic number.

It is an amenable number.

361818913 is a deficient number, since it is larger than the sum of its proper divisors (1).

361818913 is an equidigital number, since it uses as much as digits as its factorization.

361818913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 361818913 is about 19021.5381344412. The cubic root of 361818913 is about 712.5747375382.

The spelling of 361818913 in words is "three hundred sixty-one million, eight hundred eighteen thousand, nine hundred thirteen".