2549345508889 has 3 divisors (see below), whose sum is σ = 2549347105557. Its totient is φ = 2549343912222.

The previous prime is 2549345508859. The next prime is 2549345508973. The reversal of 2549345508889 is 9888055439452.

The square root of 2549345508889 is 1596667.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2549345508889 - 2¹⁵ = 2549345476121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2549345508839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 798334 + ... + 2395000.

It is an arithmetic number, because the mean of its divisors is an integer number (849782368519).

Almost surely, 2^{2549345508889} is an apocalyptic number.

2549345508889 is the 1596667-th square number.

2549345508889 is the 798334-th centered octagonal number.

It is an amenable number.

2549345508889 is a deficient number, since it is larger than the sum of its proper divisors (1596668).

2549345508889 is an frugal number, since it uses more digits than its factorization.

2549345508889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193334 (or 1596667 counting only the distinct ones).

The product of its (nonzero) digits is 497664000, while the sum is 70.

The spelling of 2549345508889 in words is "two trillion, five hundred forty-nine billion, three hundred forty-five million, five hundred eight thousand, eight hundred eighty-nine".