3118985 has 8 divisors (see below), whose sum is σ = 3757320. Its totient is φ = 2485504.

The previous prime is 3118949. The next prime is 3118987. The reversal of 3118985 is 5898113.

It can be written as a sum of positive squares in 4 ways, for example, as 635209 + 2483776 = 797^2 + 1576^2 .

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 3118985 - 2¹² = 3114889 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3118987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401 + ... + 2529.

It is an arithmetic number, because the mean of its divisors is an integer number (469665).

Almost surely, 2^3118985 is an apocalyptic number.

It is an amenable number.

3118985 is a deficient number, since it is larger than the sum of its proper divisors (638335).

3118985 is a wasteful number, since it uses less digits than its factorization.

3118985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427.

The product of its digits is 8640, while the sum is 35.

The square root of 3118985 is about 1766.0648345970. The cubic root of 3118985 is about 146.1070241735.

The spelling of 3118985 in words is "three million, one hundred eighteen thousand, nine hundred eighty-five".