918212385 has 8 divisors (see below), whose sum is σ = 1469139840. Its totient is φ = 489713264.

The previous prime is 918212329. The next prime is 918212389. The reversal of 918212385 is 583212819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 918212385 - 2⁹ = 918211873 is a prime.

It is a super-2 number, since 2×918212385² = 1686227967934776450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (918212389) 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 7 ways as a sum of consecutive naturals, for example, 30607065 + ... + 30607094.

It is an arithmetic number, because the mean of its divisors is an integer number (183642480).

Almost surely, 2^918212385 is an apocalyptic number.

It is an amenable number.

918212385 is a deficient number, since it is larger than the sum of its proper divisors (550927455).

918212385 is a wasteful number, since it uses less digits than its factorization.

918212385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61214167.

The product of its digits is 34560, while the sum is 39.

The square root of 918212385 is about 30302.0194871563. The cubic root of 918212385 is about 971.9584850345.

The spelling of 918212385 in words is "nine hundred eighteen million, two hundred twelve thousand, three hundred eighty-five".