918448757 has 4 divisors (see below), whose sum is σ = 933505356. Its totient is φ = 903392160.

The previous prime is 918448753. The next prime is 918448759. The reversal of 918448757 is 757844819.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 338891281 + 579557476 = 18409^2 + 24074^2 .

It is a cyclic number.

It is not a de Polignac number, because 918448757 - 2² = 918448753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 918448699 and 918448708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918448753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7528208 + ... + 7528329.

It is an arithmetic number, because the mean of its divisors is an integer number (233376339).

Almost surely, 2^918448757 is an apocalyptic number.

It is an amenable number.

918448757 is a deficient number, since it is larger than the sum of its proper divisors (15056599).

918448757 is a wasteful number, since it uses less digits than its factorization.

918448757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15056598.

The product of its digits is 2257920, while the sum is 53.

The square root of 918448757 is about 30305.9195042817. The cubic root of 918448757 is about 972.0418804317.

The spelling of 918448757 in words is "nine hundred eighteen million, four hundred forty-eight thousand, seven hundred fifty-seven".