6440213038 has 8 divisors (see below), whose sum is σ = 11040365232. Its totient is φ = 2760091296.

The previous prime is 6440213011. The next prime is 6440213041. The reversal of 6440213038 is 8303120446.

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

It is a congruent number.

It is an unprimeable number.

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, 230007595 + ... + 230007622.

It is an arithmetic number, because the mean of its divisors is an integer number (1380045654).

Almost surely, 2^6440213038 is an apocalyptic number.

6440213038 is a deficient number, since it is larger than the sum of its proper divisors (4600152194).

6440213038 is a wasteful number, since it uses less digits than its factorization.

6440213038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460015226.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 6440213038 is about 80250.9379259831. The cubic root of 6440213038 is about 1860.5160087971.

The spelling of 6440213038 in words is "six billion, four hundred forty million, two hundred thirteen thousand, thirty-eight".