7901818 has 16 divisors (see below), whose sum is σ = 12142080. Its totient is φ = 3855600.

The previous prime is 7901797. The next prime is 7901819. The reversal of 7901818 is 8181097.

7901818 is a modest number, since divided by 1818 gives 790 as remainder.

It is not an unprimeable number, because it can be changed into a prime (7901819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29023 + ... + 29293.

It is an arithmetic number, because the mean of its divisors is an integer number (758880).

Almost surely, 2^7901818 is an apocalyptic number.

7901818 is a deficient number, since it is larger than the sum of its proper divisors (4240262).

7901818 is a wasteful number, since it uses less digits than its factorization.

7901818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 7901818 is about 2811.0172535934. The cubic root of 7901818 is about 199.1784465371.

The spelling of 7901818 in words is "seven million, nine hundred one thousand, eight hundred eighteen".