918381073 has 2 divisors, whose sum is σ = 918381074. Its totient is φ = 918381072.

The previous prime is 918381041. The next prime is 918381091. The reversal of 918381073 is 370183819.

918381073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 916454529 + 1926544 = 30273^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 918381073 - 2⁵ = 918381041 is a prime.

It is not a weakly prime, because it can be changed into another prime (918388073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459190536 + 459190537.

It is an arithmetic number, because the mean of its divisors is an integer number (459190537).

Almost surely, 2^918381073 is an apocalyptic number.

It is an amenable number.

918381073 is a deficient number, since it is larger than the sum of its proper divisors (1).

918381073 is an equidigital number, since it uses as much as digits as its factorization.

918381073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 918381073 is about 30304.8028041761. The cubic root of 918381073 is about 972.0180020177.

The spelling of 918381073 in words is "nine hundred eighteen million, three hundred eighty-one thousand, seventy-three".