6389932091 has 2 divisors, whose sum is σ = 6389932092. Its totient is φ = 6389932090.

The previous prime is 6389932063. The next prime is 6389932111. The reversal of 6389932091 is 1902399836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6389932091 - 2¹⁸ = 6389669947 is a prime.

It is not a weakly prime, because it can be changed into another prime (6389932061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194966045 + 3194966046.

It is an arithmetic number, because the mean of its divisors is an integer number (3194966046).

Almost surely, 2^6389932091 is an apocalyptic number.

6389932091 is a deficient number, since it is larger than the sum of its proper divisors (1).

6389932091 is an equidigital number, since it uses as much as digits as its factorization.

6389932091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 6389932091 is about 79937.0508024908. The cubic root of 6389932091 is about 1855.6614580321.

The spelling of 6389932091 in words is "six billion, three hundred eighty-nine million, nine hundred thirty-two thousand, ninety-one".