5128081834 has 8 divisors (see below), whose sum is σ = 7711306308. Its totient is φ = 2557646400.

The previous prime is 5128081823. The next prime is 5128081837. The reversal of 5128081834 is 4381808215.

It can be written as a sum of positive squares in 2 ways, for example, as 5097246025 + 30835809 = 71395^2 + 5553^2 .

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

It is not an unprimeable number, because it can be changed into a prime (5128081837) 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, 3196257 + ... + 3197860.

Almost surely, 2^5128081834 is an apocalyptic number.

5128081834 is a deficient number, since it is larger than the sum of its proper divisors (2583224474).

5128081834 is a wasteful number, since it uses less digits than its factorization.

5128081834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394520.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 5128081834 is about 71610.6265438308. The cubic root of 5128081834 is about 1724.4541390126.

The spelling of 5128081834 in words is "five billion, one hundred twenty-eight million, eighty-one thousand, eight hundred thirty-four".