2196542869 has 2 divisors, whose sum is σ = 2196542870. Its totient is φ = 2196542868.

The previous prime is 2196542867. The next prime is 2196542923. The reversal of 2196542869 is 9682456912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1923962769 + 272580100 = 43863^2 + 16510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2196542869 - 2¹ = 2196542867 is a prime.

It is a super-2 number, since 2×2196542869² = 9649601150709502322, which contains 22 as substring.

Together with 2196542867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2196542867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098271434 + 1098271435.

It is an arithmetic number, because the mean of its divisors is an integer number (1098271435).

Almost surely, 2^2196542869 is an apocalyptic number.

It is an amenable number.

2196542869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2196542869 is an equidigital number, since it uses as much as digits as its factorization.

2196542869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 52.

The square root of 2196542869 is about 46867.2899685911. The cubic root of 2196542869 is about 1299.9098298405.

The spelling of 2196542869 in words is "two billion, one hundred ninety-six million, five hundred forty-two thousand, eight hundred sixty-nine".