5128502894 has 4 divisors (see below), whose sum is σ = 7692754344. Its totient is φ = 2564251446.

The previous prime is 5128502881. The next prime is 5128502909. The reversal of 5128502894 is 4982058215.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282125722 + ... + 1282125725.

It is an arithmetic number, because the mean of its divisors is an integer number (1923188586).

Almost surely, 2^5128502894 is an apocalyptic number.

5128502894 is a deficient number, since it is larger than the sum of its proper divisors (2564251450).

5128502894 is a wasteful number, since it uses less digits than its factorization.

5128502894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564251449.

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 5128502894 is about 71613.5664102829. The cubic root of 5128502894 is about 1724.5013352685.

The spelling of 5128502894 in words is "five billion, one hundred twenty-eight million, five hundred two thousand, eight hundred ninety-four".