2195889137069 has 8 divisors (see below), whose sum is σ = 2196975463800. Its totient is φ = 2194803072000.

The previous prime is 2195889137027. The next prime is 2195889137087. The reversal of 2195889137069 is 9607319885912.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 125714920969 + 2070174216100 = 354563^2 + 1438810^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2195889137069 - 2²⁸ = 2195620701613 is a prime.

It is a super-2 number, since 2×2195889137069² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195889137569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17926109 + ... + 18048189.

It is an arithmetic number, because the mean of its divisors is an integer number (274621932975).

Almost surely, 2^{2195889137069} is an apocalyptic number.

It is an amenable number.

2195889137069 is a deficient number, since it is larger than the sum of its proper divisors (1086326731).

2195889137069 is a wasteful number, since it uses less digits than its factorization.

2195889137069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130831.

The product of its (nonzero) digits is 58786560, while the sum is 68.

The spelling of 2195889137069 in words is "two trillion, one hundred ninety-five billion, eight hundred eighty-nine million, one hundred thirty-seven thousand, sixty-nine".