2196820849 has 2 divisors, whose sum is σ = 2196820850. Its totient is φ = 2196820848.

The previous prime is 2196820823. The next prime is 2196820883. The reversal of 2196820849 is 9480286912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2094709824 + 102111025 = 45768^2 + 10105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2196820849 - 2⁵ = 2196820817 is a prime.

It is not a weakly prime, because it can be changed into another prime (2196820889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098410424 + 1098410425.

It is an arithmetic number, because the mean of its divisors is an integer number (1098410425).

Almost surely, 2^2196820849 is an apocalyptic number.

It is an amenable number.

2196820849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2196820849 is an equidigital number, since it uses as much as digits as its factorization.

2196820849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 2196820849 is about 46870.2554825552. The cubic root of 2196820849 is about 1299.9646635365.

The spelling of 2196820849 in words is "two billion, one hundred ninety-six million, eight hundred twenty thousand, eight hundred forty-nine".