6438130727 has 18 divisors (see below), whose sum is σ = 7542603432. Its totient is φ = 5479169304.

The previous prime is 6438130711. The next prime is 6438130793. The reversal of 6438130727 is 7270318346.

It is not a de Polignac number, because 6438130727 - 2⁴ = 6438130711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438130927) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7257878 + ... + 7258764.

It is an arithmetic number, because the mean of its divisors is an integer number (419033524).

Almost surely, 2^6438130727 is an apocalyptic number.

6438130727 is a deficient number, since it is larger than the sum of its proper divisors (1104472705).

6438130727 is an frugal number, since it uses more digits than its factorization.

6438130727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 6438130727 is about 80237.9631284344. The cubic root of 6438130727 is about 1860.3154672649.

The spelling of 6438130727 in words is "six billion, four hundred thirty-eight million, one hundred thirty thousand, seven hundred twenty-seven".