7818420606 has 16 divisors (see below), whose sum is σ = 15638851200. Its totient is φ = 2605805208.

The previous prime is 7818420601. The next prime is 7818420607. The reversal of 7818420606 is 6060248187.

It is a super-2 number, since 2×7818420606² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7818420601) 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, 30586 + ... + 128733.

It is an arithmetic number, because the mean of its divisors is an integer number (977428200).

Almost surely, 2^7818420606 is an apocalyptic number.

7818420606 is an abundant number, since it is smaller than the sum of its proper divisors (7820430594).

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

7818420606 is a wasteful number, since it uses less digits than its factorization.

7818420606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167503.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 7818420606 is about 88421.8333105574. The cubic root of 7818420606 is about 1984.7524351226.

It can be divided in two parts, 78184 and 20606, that added together give a triangular number (98790 = T₄₄₄).

The spelling of 7818420606 in words is "seven billion, eight hundred eighteen million, four hundred twenty thousand, six hundred six".