2918609 has 4 divisors (see below), whose sum is σ = 3072240. Its totient is φ = 2764980.

The previous prime is 2918603. The next prime is 2918621. The reversal of 2918609 is 9068192.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2918609 - 2⁴ = 2918593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2918603) 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, 76787 + ... + 76824.

It is an arithmetic number, because the mean of its divisors is an integer number (768060).

2^2918609 is an apocalyptic number.

It is an amenable number.

2918609 is a deficient number, since it is larger than the sum of its proper divisors (153631).

2918609 is a wasteful number, since it uses less digits than its factorization.

2918609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153630.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 2918609 is about 1708.3936899907. The cubic root of 2918609 is about 142.9086903026.

The spelling of 2918609 in words is "two million, nine hundred eighteen thousand, six hundred nine".