6486261939 has 6 divisors (see below), whose sum is σ = 9369045036. Its totient is φ = 4324174620.

The previous prime is 6486261913. The next prime is 6486261941. The reversal of 6486261939 is 9391626846.

6486261939 is a `hidden beast` number, since 6 + 4 + 8 + 626 + 1 + 9 + 3 + 9 = 666.

It is not a de Polignac number, because 6486261939 - 2¹⁷ = 6486130867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6486261989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360347877 + ... + 360347894.

It is an arithmetic number, because the mean of its divisors is an integer number (1561507506).

Almost surely, 2^6486261939 is an apocalyptic number.

6486261939 is a deficient number, since it is larger than the sum of its proper divisors (2882783097).

6486261939 is a wasteful number, since it uses less digits than its factorization.

6486261939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720695777 (or 720695774 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The square root of 6486261939 is about 80537.3325793697. The cubic root of 6486261939 is about 1864.9398441977.

The spelling of 6486261939 in words is "six billion, four hundred eighty-six million, two hundred sixty-one thousand, nine hundred thirty-nine".