6403380291 has 32 divisors (see below), whose sum is σ = 11827315200. Its totient is φ = 3326430240.

The previous prime is 6403380257. The next prime is 6403380299. The reversal of 6403380291 is 1920833046.

6403380291 is a `hidden beast` number, since 640 + 3 + 3 + 8 + 0 + 2 + 9 + 1 = 666.

It is not a de Polignac number, because 6403380291 - 2⁶ = 6403380227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6403380299) 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 in 31 ways as a sum of consecutive naturals, for example, 1537936 + ... + 1542093.

It is an arithmetic number, because the mean of its divisors is an integer number (369603600).

Almost surely, 2^6403380291 is an apocalyptic number.

6403380291 is a deficient number, since it is larger than the sum of its proper divisors (5423934909).

6403380291 is a wasteful number, since it uses less digits than its factorization.

6403380291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080056 (or 3080050 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6403380291 is about 80021.1240298460. The cubic root of 6403380291 is about 1856.9623492670.

The spelling of 6403380291 in words is "six billion, four hundred three million, three hundred eighty thousand, two hundred ninety-one".