6340403938 has 8 divisors (see below), whose sum is σ = 10375206480. Its totient is φ = 2882001780.

The previous prime is 6340403921. The next prime is 6340403941. The reversal of 6340403938 is 8393040436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6340403938.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 144100068 + ... + 144100111.

It is an arithmetic number, because the mean of its divisors is an integer number (1296900810).

Almost surely, 2^6340403938 is an apocalyptic number.

6340403938 is a deficient number, since it is larger than the sum of its proper divisors (4034802542).

6340403938 is a wasteful number, since it uses less digits than its factorization.

6340403938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288200192.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 6340403938 is about 79626.6534396618. The cubic root of 6340403938 is about 1850.8546270977.

The spelling of 6340403938 in words is "six billion, three hundred forty million, four hundred three thousand, nine hundred thirty-eight".