8135224649 has 4 divisors (see below), whose sum is σ = 8199281664. Its totient is φ = 8071167636.

The previous prime is 8135224613. The next prime is 8135224709. The reversal of 8135224649 is 9464225318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8135224649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8135224049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32028317 + ... + 32028570.

It is an arithmetic number, because the mean of its divisors is an integer number (2049820416).

Almost surely, 2^8135224649 is an apocalyptic number.

It is an amenable number.

8135224649 is a deficient number, since it is larger than the sum of its proper divisors (64057015).

8135224649 is a wasteful number, since it uses less digits than its factorization.

8135224649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64057014.

The product of its digits is 414720, while the sum is 44.

The square root of 8135224649 is about 90195.4802027241. The cubic root of 8135224649 is about 2011.2058183081.

The spelling of 8135224649 in words is "eight billion, one hundred thirty-five million, two hundred twenty-four thousand, six hundred forty-nine".