5123842389 has 12 divisors (see below), whose sum is σ = 7401928716. Its totient is φ = 3415515072.

The previous prime is 5123842357. The next prime is 5123842391. The reversal of 5123842389 is 9832483215.

5123842389 is a `hidden beast` number, since 512 + 38 + 4 + 23 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4380189489 + 743652900 = 66183^2 + 27270^2 .

It is not a de Polignac number, because 5123842389 - 2⁵ = 5123842357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123842189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71449 + ... + 123905.

It is an arithmetic number, because the mean of its divisors is an integer number (616827393).

Almost surely, 2^5123842389 is an apocalyptic number.

It is an amenable number.

5123842389 is a deficient number, since it is larger than the sum of its proper divisors (2278086327).

5123842389 is a wasteful number, since it uses less digits than its factorization.

5123842389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63316 (or 63313 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 5123842389 is about 71581.0197538426. The cubic root of 5123842389 is about 1723.9787992227.

The spelling of 5123842389 in words is "five billion, one hundred twenty-three million, eight hundred forty-two thousand, three hundred eighty-nine".