6394027642 has 4 divisors (see below), whose sum is σ = 9591041466. Its totient is φ = 3197013820.

The previous prime is 6394027639. The next prime is 6394027657. The reversal of 6394027642 is 2467204936.

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

It can be written as a sum of positive squares in only one way, i.e., 4174581321 + 2219446321 = 64611^2 + 47111^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1598506909 + ... + 1598506912.

Almost surely, 2^6394027642 is an apocalyptic number.

6394027642 is a deficient number, since it is larger than the sum of its proper divisors (3197013824).

6394027642 is a wasteful number, since it uses less digits than its factorization.

6394027642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197013823.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 6394027642 is about 79962.6640501678. The cubic root of 6394027642 is about 1856.0578280774.

The spelling of 6394027642 in words is "six billion, three hundred ninety-four million, twenty-seven thousand, six hundred forty-two".