918074789 has 2 divisors, whose sum is σ = 918074790. Its totient is φ = 918074788.

The previous prime is 918074777. The next prime is 918074797. The reversal of 918074789 is 987470819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 539772289 + 378302500 = 23233^2 + 19450^2 .

It is an emirp because it is prime and its reverse (987470819) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918074789 is a prime.

It is a super-2 number, since 2×918074789² = 1685722636394789042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 918074789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918074189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459037394 + 459037395.

It is an arithmetic number, because the mean of its divisors is an integer number (459037395).

Almost surely, 2^918074789 is an apocalyptic number.

It is an amenable number.

918074789 is a deficient number, since it is larger than the sum of its proper divisors (1).

918074789 is an equidigital number, since it uses as much as digits as its factorization.

918074789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 918074789 is about 30299.7489923597. The cubic root of 918074789 is about 971.9099326215.

The spelling of 918074789 in words is "nine hundred eighteen million, seventy-four thousand, seven hundred eighty-nine".