5138394570 has 80 divisors (see below), whose sum is σ = 13836607488. Its totient is φ = 1368252000.

The previous prime is 5138394533. The next prime is 5138394571. The reversal of 5138394570 is 754938315.

5138394570 is a `hidden beast` number, since 513 + 83 + 9 + 4 + 57 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (5138394571) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 604087 + ... + 612533.

Almost surely, 2^5138394570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5138394570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6918303744).

5138394570 is an abundant number, since it is smaller than the sum of its proper divisors (8698212918).

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

5138394570 is a wasteful number, since it uses less digits than its factorization.

5138394570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9217 (or 9208 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 5138394570 is about 71682.5960048881. The cubic root of 5138394570 is about 1725.6093423853.

The spelling of 5138394570 in words is "five billion, one hundred thirty-eight million, three hundred ninety-four thousand, five hundred seventy".