3118639 has 4 divisors (see below), whose sum is σ = 3254256. Its totient is φ = 2983024.

The previous prime is 3118637. The next prime is 3118651. The reversal of 3118639 is 9368113.

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

It is a cyclic number.

It is not a de Polignac number, because 3118639 - 2¹ = 3118637 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3118639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3118637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67774 + ... + 67819.

It is an arithmetic number, because the mean of its divisors is an integer number (813564).

Almost surely, 2^3118639 is an apocalyptic number.

3118639 is a deficient number, since it is larger than the sum of its proper divisors (135617).

3118639 is a wasteful number, since it uses less digits than its factorization.

3118639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135616.

The product of its digits is 3888, while the sum is 31.

The square root of 3118639 is about 1765.9668739815. The cubic root of 3118639 is about 146.1016212513.

The spelling of 3118639 in words is "three million, one hundred eighteen thousand, six hundred thirty-nine".