7906018 has 4 divisors (see below), whose sum is σ = 11859030. Its totient is φ = 3953008.

The previous prime is 7906013. The next prime is 7906021. The reversal of 7906018 is 8106097.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6385729 + 1520289 = 2527^2 + 1233^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7906013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1976503 + ... + 1976506.

Almost surely, 2^7906018 is an apocalyptic number.

7906018 is a deficient number, since it is larger than the sum of its proper divisors (3953012).

7906018 is a wasteful number, since it uses less digits than its factorization.

7906018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953011.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 7906018 is about 2811.7642148658. The cubic root of 7906018 is about 199.2137296118.

The spelling of 7906018 in words is "seven million, nine hundred six thousand, eighteen".