8438537128 has 16 divisors (see below), whose sum is σ = 18082579680. Its totient is φ = 3616515888.

The previous prime is 8438537119. The next prime is 8438537153. The reversal of 8438537128 is 8217358348.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75344026 + ... + 75344137.

It is an arithmetic number, because the mean of its divisors is an integer number (1130161230).

Almost surely, 2^8438537128 is an apocalyptic number.

It is an amenable number.

8438537128 is an abundant number, since it is smaller than the sum of its proper divisors (9644042552).

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

8438537128 is a wasteful number, since it uses less digits than its factorization.

8438537128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150688176 (or 150688172 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 8438537128 is about 91861.5105906712. The cubic root of 8438537128 is about 2035.8966223180.

The spelling of 8438537128 in words is "eight billion, four hundred thirty-eight million, five hundred thirty-seven thousand, one hundred twenty-eight".