7858818996 has 48 divisors (see below), whose sum is σ = 21049222656. Its totient is φ = 2235479904.

The previous prime is 7858818991. The next prime is 7858819027. The reversal of 7858818996 is 6998188587.

It is a super-2 number, since 2×7858818996² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7858818996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7858818991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187006 + ... + 225141.

It is an arithmetic number, because the mean of its divisors is an integer number (438525472).

Almost surely, 2^7858818996 is an apocalyptic number.

It is an amenable number.

7858818996 is an abundant number, since it is smaller than the sum of its proper divisors (13190403660).

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

7858818996 is a wasteful number, since it uses less digits than its factorization.

7858818996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412388 (or 412386 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 69.

The square root of 7858818996 is about 88649.9802368844. The cubic root of 7858818996 is about 1988.1650211112.

The spelling of 7858818996 in words is "seven billion, eight hundred fifty-eight million, eight hundred eighteen thousand, nine hundred ninety-six".