5321865649 has 8 divisors (see below), whose sum is σ = 5556741120. Its totient is φ = 5087281056.

The previous prime is 5321865607. The next prime is 5321865673. The reversal of 5321865649 is 9465681235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5321865649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5321865049) 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, 34897 + ... + 108910.

It is an arithmetic number, because the mean of its divisors is an integer number (694592640).

Almost surely, 2^5321865649 is an apocalyptic number.

It is an amenable number.

5321865649 is a deficient number, since it is larger than the sum of its proper divisors (234875471).

5321865649 is a wasteful number, since it uses less digits than its factorization.

5321865649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145439.

The product of its digits is 1555200, while the sum is 49.

The square root of 5321865649 is about 72951.1182162412. The cubic root of 5321865649 is about 1745.9077877522.

The spelling of 5321865649 in words is "five billion, three hundred twenty-one million, eight hundred sixty-five thousand, six hundred forty-nine".