6402905983 has 2 divisors, whose sum is σ = 6402905984. Its totient is φ = 6402905982.

The previous prime is 6402905921. The next prime is 6402906023. The reversal of 6402905983 is 3895092046.

6402905983 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6402905983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6402905903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201452991 + 3201452992.

It is an arithmetic number, because the mean of its divisors is an integer number (3201452992).

Almost surely, 2^6402905983 is an apocalyptic number.

6402905983 is a deficient number, since it is larger than the sum of its proper divisors (1).

6402905983 is an equidigital number, since it uses as much as digits as its factorization.

6402905983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 6402905983 is about 80018.1603325145. The cubic root of 6402905983 is about 1856.9164988044.

The spelling of 6402905983 in words is "six billion, four hundred two million, nine hundred five thousand, nine hundred eighty-three".