6345943903 has 4 divisors (see below), whose sum is σ = 6834093448. Its totient is φ = 5857794360.

The previous prime is 6345943871. The next prime is 6345943907. The reversal of 6345943903 is 3093495436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6345943903 - 2⁵ = 6345943871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6345943907) 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 3 ways as a sum of consecutive naturals, for example, 244074753 + ... + 244074778.

It is an arithmetic number, because the mean of its divisors is an integer number (1708523362).

Almost surely, 2^6345943903 is an apocalyptic number.

6345943903 is a deficient number, since it is larger than the sum of its proper divisors (488149545).

6345943903 is a wasteful number, since it uses less digits than its factorization.

6345943903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488149544.

The product of its (nonzero) digits is 1049760, while the sum is 46.

The square root of 6345943903 is about 79661.4329710431. The cubic root of 6345943903 is about 1851.3935351863.

The spelling of 6345943903 in words is "six billion, three hundred forty-five million, nine hundred forty-three thousand, nine hundred three".