6381345730 has 8 divisors (see below), whose sum is σ = 11486422332. Its totient is φ = 2552538288.

The previous prime is 6381345701. The next prime is 6381345749. The reversal of 6381345730 is 375431836.

It can be written as a sum of positive squares in 2 ways, for example, as 6345237649 + 36108081 = 79657^2 + 6009^2 .

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

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, 319067277 + ... + 319067296.

Almost surely, 2^6381345730 is an apocalyptic number.

6381345730 is a deficient number, since it is larger than the sum of its proper divisors (5105076602).

6381345730 is a wasteful number, since it uses less digits than its factorization.

6381345730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638134580.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 6381345730 is about 79883.3257319699. The cubic root of 6381345730 is about 1854.8299144407.

The spelling of 6381345730 in words is "six billion, three hundred eighty-one million, three hundred forty-five thousand, seven hundred thirty".