6400195747 has 4 divisors (see below), whose sum is σ = 6982031736. Its totient is φ = 5818359760.

The previous prime is 6400195741. The next prime is 6400195801. The reversal of 6400195747 is 7475910046.

6400195747 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6400195747 - 2¹⁹ = 6399671459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6400195741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290917978 + ... + 290917999.

It is an arithmetic number, because the mean of its divisors is an integer number (1745507934).

Almost surely, 2^6400195747 is an apocalyptic number.

6400195747 is a deficient number, since it is larger than the sum of its proper divisors (581835989).

6400195747 is a wasteful number, since it uses less digits than its factorization.

6400195747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581835988.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 6400195747 is about 80001.2234093954. The cubic root of 6400195747 is about 1856.6544619415.

The spelling of 6400195747 in words is "six billion, four hundred million, one hundred ninety-five thousand, seven hundred forty-seven".