5128081963 has 4 divisors (see below), whose sum is σ = 5128500400. Its totient is φ = 5127663528.

The previous prime is 5128081913. The next prime is 5128081967. The reversal of 5128081963 is 3691808215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5128081963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5128081967) 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, 190263 + ... + 215536.

It is an arithmetic number, because the mean of its divisors is an integer number (1282125100).

Almost surely, 2^5128081963 is an apocalyptic number.

5128081963 is a deficient number, since it is larger than the sum of its proper divisors (418437).

5128081963 is a wasteful number, since it uses less digits than its factorization.

5128081963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418436.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 5128081963 is about 71610.6274445351. The cubic root of 5128081963 is about 1724.4541534725.

The spelling of 5128081963 in words is "five billion, one hundred twenty-eight million, eighty-one thousand, nine hundred sixty-three".