6205681439 has 4 divisors (see below), whose sum is σ = 6349999656. Its totient is φ = 6061363224.

The previous prime is 6205681397. The next prime is 6205681441. The reversal of 6205681439 is 9341865026.

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 6205681439 - 2²⁴ = 6188904223 is a prime.

It is a super-2 number, since 2×6205681439² = 77020964244698221442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6205681439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6205681499) 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, 72159044 + ... + 72159129.

It is an arithmetic number, because the mean of its divisors is an integer number (1587499914).

Almost surely, 2^6205681439 is an apocalyptic number.

6205681439 is a deficient number, since it is larger than the sum of its proper divisors (144318217).

6205681439 is a wasteful number, since it uses less digits than its factorization.

6205681439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144318216.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 6205681439 is about 78776.1476527001. The cubic root of 6205681439 is about 1837.6515248208.

The spelling of 6205681439 in words is "six billion, two hundred five million, six hundred eighty-one thousand, four hundred thirty-nine".