6658459381 has 16 divisors (see below), whose sum is σ = 7644364416. Its totient is φ = 5681293056.

The previous prime is 6658459373. The next prime is 6658459433. The reversal of 6658459381 is 1839548566.

It is a cyclic number.

It is not a de Polignac number, because 6658459381 - 2³ = 6658459373 is a prime.

It is a super-2 number, since 2×6658459381² = 88670162656853806322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6658459321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491705 + ... + 1496161.

It is an arithmetic number, because the mean of its divisors is an integer number (477772776).

Almost surely, 2^6658459381 is an apocalyptic number.

It is an amenable number.

6658459381 is a deficient number, since it is larger than the sum of its proper divisors (985905035).

6658459381 is a wasteful number, since it uses less digits than its factorization.

6658459381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388.

The product of its digits is 6220800, while the sum is 55.

The square root of 6658459381 is about 81599.3834596806. The cubic root of 6658459381 is about 1881.2994054552.

The spelling of 6658459381 in words is "six billion, six hundred fifty-eight million, four hundred fifty-nine thousand, three hundred eighty-one".