7021852818 has 16 divisors (see below), whose sum is σ = 14045446656. Its totient is φ = 2340327440.

The previous prime is 7021852813. The next prime is 7021852889. The reversal of 7021852818 is 8182581207.

It is a super-2 number, since 2×7021852818² = 98612833995309082248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7021852818.

It is not an unprimeable number, because it can be changed into a prime (7021852813) 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, 16818 + ... + 119693.

It is an arithmetic number, because the mean of its divisors is an integer number (877840416).

Almost surely, 2^7021852818 is an apocalyptic number.

7021852818 is an abundant number, since it is smaller than the sum of its proper divisors (7023593838).

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

7021852818 is a wasteful number, since it uses less digits than its factorization.

7021852818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145089.

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 7021852818 is about 83796.4964542074. The cubic root of 7021852818 is about 1914.9197309487.

The spelling of 7021852818 in words is "seven billion, twenty-one million, eight hundred fifty-two thousand, eight hundred eighteen".