918518749 has 2 divisors, whose sum is σ = 918518750. Its totient is φ = 918518748.

The previous prime is 918518723. The next prime is 918518759. The reversal of 918518749 is 947815819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 866419225 + 52099524 = 29435^2 + 7218^2 .

It is a cyclic number.

It is not a de Polignac number, because 918518749 - 2¹⁹ = 917994461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 918518696 and 918518705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918518759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459259374 + 459259375.

It is an arithmetic number, because the mean of its divisors is an integer number (459259375).

Almost surely, 2^918518749 is an apocalyptic number.

It is an amenable number.

918518749 is a deficient number, since it is larger than the sum of its proper divisors (1).

918518749 is an equidigital number, since it uses as much as digits as its factorization.

918518749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 52.

The square root of 918518749 is about 30307.0742401836. The cubic root of 918518749 is about 972.0665718572.

The spelling of 918518749 in words is "nine hundred eighteen million, five hundred eighteen thousand, seven hundred forty-nine".