5981438139 has 4 divisors (see below), whose sum is σ = 7975250856. Its totient is φ = 3987625424.

The previous prime is 5981438101. The next prime is 5981438147. The reversal of 5981438139 is 9318341895.

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

It is a cyclic number.

It is not a de Polignac number, because 5981438139 - 2²⁰ = 5980389563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5981438091 and 5981438100.

It is not an unprimeable number, because it can be changed into a prime (5981438149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996906354 + ... + 996906359.

It is an arithmetic number, because the mean of its divisors is an integer number (1993812714).

Almost surely, 2^5981438139 is an apocalyptic number.

5981438139 is a deficient number, since it is larger than the sum of its proper divisors (1993812717).

5981438139 is a wasteful number, since it uses less digits than its factorization.

5981438139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993812716.

The product of its digits is 933120, while the sum is 51.

The square root of 5981438139 is about 77339.7578157573. The cubic root of 5981438139 is about 1815.2448160685.

The spelling of 5981438139 in words is "five billion, nine hundred eighty-one million, four hundred thirty-eight thousand, one hundred thirty-nine".