7918 has 8 divisors (see below), whose sum is σ = 12312.
Its totient is φ = 3816.
The previous prime is 7907. The next prime is 7919. The reversal of 7918 is 8197.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a plaindrome in base 16.
It is a junction number, because it is equal to n+sod(n) for n = 7892 and 7901.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (7919) 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, 21 + ... + 127.
It is an arithmetic number, because the mean of its divisors is an integer number (1539).
27918 is an apocalyptic number.
7918 is a deficient number, since it is larger than the sum of its proper divisors (4394).
7918 is a wasteful number, since it uses less digits than its factorization.
7918 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 146.
The product of its digits is 504, while the sum is 25.
The square root of 7918 is about 88.9831444713.
The cubic root of 7918 is about 19.9314318558.
It can be divided in two parts, 791 and 8, that multiplied together give a triangular number (6328 = T112).
The spelling of 7918 in words is "seven thousand, nine hundred eighteen".