8249745384169 has 3 divisors (see below), whose sum is σ = 8249748256407. Its totient is φ = 8249742511932.

The previous prime is 8249745384059. The next prime is 8249745384247. The reversal of 8249745384169 is 9614835479428.

The square root of 8249745384169 is 2872237.

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 can be written as a sum of positive squares in only one way, i.e., 8219889691225 + 29855692944 = 2867035^2 + 172788^2 .

It is not a de Polignac number, because 8249745384169 - 2¹⁷ = 8249745253097 is a prime.

It is a super-2 number, since 2×8249745384169² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8249745384098 and 8249745384107.

It is not an unprimeable number, because it can be changed into a prime (8249745384869) 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, 1436119 + ... + 4308355.

It is an arithmetic number, because the mean of its divisors is an integer number (2749916085469).

Almost surely, 2^{8249745384169} is an apocalyptic number.

8249745384169 is the 2872237-th square number.

8249745384169 is the 1436119-th centered octagonal number.

It is an amenable number.

8249745384169 is a deficient number, since it is larger than the sum of its proper divisors (2872238).

8249745384169 is an frugal number, since it uses more digits than its factorization.

8249745384169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744474 (or 2872237 counting only the distinct ones).

The product of its digits is 418037760, while the sum is 70.

The spelling of 8249745384169 in words is "eight trillion, two hundred forty-nine billion, seven hundred forty-five million, three hundred eighty-four thousand, one hundred sixty-nine".