6390512191 has 16 divisors (see below), whose sum is σ = 7551532800. Its totient is φ = 5294013120.

The previous prime is 6390512179. The next prime is 6390512201. The reversal of 6390512191 is 1912150936.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6390512191 - 2⁵ = 6390512159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6390512191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390512171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73341 + ... + 134758.

It is an arithmetic number, because the mean of its divisors is an integer number (471970800).

Almost surely, 2^6390512191 is an apocalyptic number.

6390512191 is a deficient number, since it is larger than the sum of its proper divisors (1161020609).

6390512191 is a wasteful number, since it uses less digits than its factorization.

6390512191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208254.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 6390512191 is about 79940.6792002670. The cubic root of 6390512191 is about 1855.7176107748.

The spelling of 6390512191 in words is "six billion, three hundred ninety million, five hundred twelve thousand, one hundred ninety-one".