2119694310889 has 9 divisors (see below), whose sum is σ = 2127381584133. Its totient is φ = 2112034731552.

The previous prime is 2119694310871. The next prime is 2119694310959. The reversal of 2119694310889 is 9880134969112.

The square root of 2119694310889 is 1455917.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 111499227225 + 2008195083664 = 333915^2 + 1417108^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2119694310889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2119694310989) 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 8 ways as a sum of consecutive naturals, for example, 426581197 + ... + 426586165.

Almost surely, 2^{2119694310889} is an apocalyptic number.

2119694310889 is the 1455917-th square number.

2119694310889 is the 727959-th centered octagonal number.

It is an amenable number.

2119694310889 is a deficient number, since it is larger than the sum of its proper divisors (7687273244).

2119694310889 is an frugal number, since it uses more digits than its factorization.

2119694310889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10524 (or 5262 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 61.

The spelling of 2119694310889 in words is "two trillion, one hundred nineteen billion, six hundred ninety-four million, three hundred ten thousand, eight hundred eighty-nine".