7975818 has 24 divisors (see below), whose sum is σ = 17367168. Its totient is φ = 2645352.

The previous prime is 7975817. The next prime is 7975837. The reversal of 7975818 is 8185797.

It is a super-2 number, since 2×7975818² = 127227345538248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7975817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3021 + ... + 5007.

It is an arithmetic number, because the mean of its divisors is an integer number (723632).

Almost surely, 2^7975818 is an apocalyptic number.

7975818 is an abundant number, since it is smaller than the sum of its proper divisors (9391350).

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

7975818 is a wasteful number, since it uses less digits than its factorization.

7975818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 2215 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 7975818 is about 2824.1490753854. The cubic root of 7975818 is about 199.7982799468.

The spelling of 7975818 in words is "seven million, nine hundred seventy-five thousand, eight hundred eighteen".