2918 has 4 divisors (see below), whose sum is σ = 4380.
Its totient is φ = 1458.
The previous prime is 2917. The next prime is 2927. The reversal of 2918 is 8192.
It is a semiprime because it is the product of two primes.
It is a plaindrome in base 7.
It is a nialpdrome in base 16.
It is a self number, because there is not a number n which added to its sum of digits gives 2918.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2917) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is an upside-down number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728 + ... + 731.
It is an arithmetic number, because the mean of its divisors is an integer number (1095).
22918 is an apocalyptic number.
2918 is a deficient number, since it is larger than the sum of its proper divisors (1462).
2918 is a wasteful number, since it uses less digits than its factorization.
2918 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1461.
The product of its digits is 144, while the sum is 20.
The square root of 2918 is about 54.0185153443.
The cubic root of 2918 is about 14.2898749786.
The spelling of 2918 in words is "two thousand, nine hundred eighteen".