5128865898 has 32 divisors (see below), whose sum is σ = 11696602176. Its totient is φ = 1485282048.

The previous prime is 5128865839. The next prime is 5128865899. The reversal of 5128865898 is 8985688215.

It is not an unprimeable number, because it can be changed into a prime (5128865899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1932636 + ... + 1935287.

It is an arithmetic number, because the mean of its divisors is an integer number (365518818).

Almost surely, 2^5128865898 is an apocalyptic number.

5128865898 is an abundant number, since it is smaller than the sum of its proper divisors (6567736278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5128865898 is a wasteful number, since it uses less digits than its factorization.

5128865898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867958.

The product of its digits is 11059200, while the sum is 60.

The square root of 5128865898 is about 71616.1008293526. The cubic root of 5128865898 is about 1724.5420220034.

The spelling of 5128865898 in words is "five billion, one hundred twenty-eight million, eight hundred sixty-five thousand, eight hundred ninety-eight".