7980918 has 24 divisors (see below), whose sum is σ = 17546424. Its totient is φ = 2418240.

The previous prime is 7980911. The next prime is 7980923. The reversal of 7980918 is 8190897.

It is a self number, because there is not a number n which added to its sum of digits gives 7980918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7980911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4771 + ... + 6222.

It is an arithmetic number, because the mean of its divisors is an integer number (731101).

Almost surely, 2^7980918 is an apocalyptic number.

7980918 is an abundant number, since it is smaller than the sum of its proper divisors (9565506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7980918 is a wasteful number, since it uses less digits than its factorization.

7980918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11020 (or 11009 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 7980918 is about 2825.0518579311. The cubic root of 7980918 is about 199.8408567340.

The spelling of 7980918 in words is "seven million, nine hundred eighty thousand, nine hundred eighteen".