8349257649 has 8 divisors (see below), whose sum is σ = 11133417600. Its totient is φ = 5565634736.

The previous prime is 8349257641. The next prime is 8349257677. The reversal of 8349257649 is 9467529438.

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 8349257649 - 2³ = 8349257641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8349257641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96462 + ... + 161255.

It is an arithmetic number, because the mean of its divisors is an integer number (1391677200).

Almost surely, 2^8349257649 is an apocalyptic number.

It is an amenable number.

8349257649 is a deficient number, since it is larger than the sum of its proper divisors (2784159951).

8349257649 is a wasteful number, since it uses less digits than its factorization.

8349257649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268519.

The product of its digits is 13063680, while the sum is 57.

The square root of 8349257649 is about 91374.2723582519. The cubic root of 8349257649 is about 2028.6912422047.

It can be divided in two parts, 83492 and 57649, that added together give a palindrome (141141).

The spelling of 8349257649 in words is "eight billion, three hundred forty-nine million, two hundred fifty-seven thousand, six hundred forty-nine".