918330057 has 6 divisors (see below), whose sum is σ = 1326476762. Its totient is φ = 612220032.

The previous prime is 918330053. The next prime is 918330071. The reversal of 918330057 is 750033819.

It can be written as a sum of positive squares in only one way, i.e., 512750736 + 405579321 = 22644^2 + 20139^2 .

It is not a de Polignac number, because 918330057 - 2² = 918330053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918330053) 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 in 5 ways as a sum of consecutive naturals, for example, 51018328 + ... + 51018345.

Almost surely, 2^918330057 is an apocalyptic number.

It is an amenable number.

918330057 is a deficient number, since it is larger than the sum of its proper divisors (408146705).

918330057 is a wasteful number, since it uses less digits than its factorization.

918330057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102036679 (or 102036676 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 918330057 is about 30303.9610777205. The cubic root of 918330057 is about 972.0000031753. Note that the first 5 decimals are identical.

The spelling of 918330057 in words is "nine hundred eighteen million, three hundred thirty thousand, fifty-seven".