918273913 has 2 divisors, whose sum is σ = 918273914. Its totient is φ = 918273912.

The previous prime is 918273907. The next prime is 918273949. The reversal of 918273913 is 319372819.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779693929 + 138579984 = 27923^2 + 11772^2 .

It is a cyclic number.

It is not a de Polignac number, because 918273913 - 2¹³ = 918265721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 918273913.

It is not a weakly prime, because it can be changed into another prime (918273973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459136956 + 459136957.

It is an arithmetic number, because the mean of its divisors is an integer number (459136957).

Almost surely, 2^918273913 is an apocalyptic number.

It is an amenable number.

918273913 is a deficient number, since it is larger than the sum of its proper divisors (1).

918273913 is an equidigital number, since it uses as much as digits as its factorization.

918273913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 918273913 is about 30303.0347160148. The cubic root of 918273913 is about 971.9801943641.

The spelling of 918273913 in words is "nine hundred eighteen million, two hundred seventy-three thousand, nine hundred thirteen".