2918987 has 4 divisors (see below), whose sum is σ = 2935296. Its totient is φ = 2902680.

The previous prime is 2918977. The next prime is 2919011. The reversal of 2918987 is 7898192.

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 2918987 - 2⁸ = 2918731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2918977) 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, 7883 + ... + 8244.

It is an arithmetic number, because the mean of its divisors is an integer number (733824).

2^2918987 is an apocalyptic number.

2918987 is a deficient number, since it is larger than the sum of its proper divisors (16309).

2918987 is a wasteful number, since it uses less digits than its factorization.

2918987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16308.

The product of its digits is 72576, while the sum is 44.

The square root of 2918987 is about 1708.5043166466. The cubic root of 2918987 is about 142.9148595831.

The spelling of 2918987 in words is "two million, nine hundred eighteen thousand, nine hundred eighty-seven".