7969818 has 16 divisors (see below), whose sum is σ = 15991776. Its totient is φ = 2647920.

The previous prime is 7969813. The next prime is 7969823. The reversal of 7969818 is 8189697.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7969813) and next prime (7969823).

It is an Ulam number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (7969813) 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, 21 + ... + 3992.

It is an arithmetic number, because the mean of its divisors is an integer number (999486).

Almost surely, 2^7969818 is an apocalyptic number.

7969818 is an abundant number, since it is smaller than the sum of its proper divisors (8021958).

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

7969818 is a wasteful number, since it uses less digits than its factorization.

7969818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349.

The product of its digits is 217728, while the sum is 48.

The square root of 7969818 is about 2823.0866086608. The cubic root of 7969818 is about 199.7481663655.

The spelling of 7969818 in words is "seven million, nine hundred sixty-nine thousand, eight hundred eighteen".