6395450641 has 4 divisors (see below), whose sum is σ = 6551437284. Its totient is φ = 6239464000.

The previous prime is 6395450639. The next prime is 6395450683. The reversal of 6395450641 is 1460545936.

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

It can be written as a sum of positive squares in 2 ways, for example, as 895745041 + 5499705600 = 29929^2 + 74160^2 .

It is a cyclic number.

It is not a de Polignac number, because 6395450641 - 2¹ = 6395450639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6395450041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77993260 + ... + 77993341.

It is an arithmetic number, because the mean of its divisors is an integer number (1637859321).

Almost surely, 2^6395450641 is an apocalyptic number.

It is an amenable number.

6395450641 is a deficient number, since it is larger than the sum of its proper divisors (155986643).

6395450641 is a wasteful number, since it uses less digits than its factorization.

6395450641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155986642.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 6395450641 is about 79971.5614515560. The cubic root of 6395450641 is about 1856.1955072093.

The spelling of 6395450641 in words is "six billion, three hundred ninety-five million, four hundred fifty thousand, six hundred forty-one".