5269743649 has 9 divisors (see below), whose sum is σ = 5309605497. Its totient is φ = 5230180464.

The previous prime is 5269743641. The next prime is 5269743659. The reversal of 5269743649 is 9463479625.

The square root of 5269743649 is 72593.

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 3629025 + 5266114624 = 1905^2 + 72568^2 .

It is not a de Polignac number, because 5269743649 - 2³ = 5269743641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5269743649.

It is not an unprimeable number, because it can be changed into a prime (5269743641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16623639 + ... + 16623955.

Almost surely, 2^5269743649 is an apocalyptic number.

5269743649 is the 72593-rd square number.

5269743649 is the 36297-th centered octagonal number.

It is an amenable number.

5269743649 is a deficient number, since it is larger than the sum of its proper divisors (39861848).

5269743649 is an frugal number, since it uses more digits than its factorization.

5269743649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 546 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 55.

The cubic root of 5269743649 is about 1740.1893096752.

The spelling of 5269743649 in words is "five billion, two hundred sixty-nine million, seven hundred forty-three thousand, six hundred forty-nine".