5128237649 has 8 divisors (see below), whose sum is σ = 5307120000. Its totient is φ = 4949491792.

The previous prime is 5128237643. The next prime is 5128237691. The reversal of 5128237649 is 9467328215.

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 5128237649 - 2⁸ = 5128237393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5128237643) 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, 45512 + ... + 111030.

It is an arithmetic number, because the mean of its divisors is an integer number (663390000).

Almost surely, 2^5128237649 is an apocalyptic number.

It is an amenable number.

5128237649 is a deficient number, since it is larger than the sum of its proper divisors (178882351).

5128237649 is a wasteful number, since it uses less digits than its factorization.

5128237649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68247.

The product of its digits is 725760, while the sum is 47.

The square root of 5128237649 is about 71611.7144676763. The cubic root of 5128237649 is about 1724.4716044840.

The spelling of 5128237649 in words is "five billion, one hundred twenty-eight million, two hundred thirty-seven thousand, six hundred forty-nine".