6448961642 has 8 divisors (see below), whose sum is σ = 9674522976. Its totient is φ = 3224120652.

The previous prime is 6448961609. The next prime is 6448961647. The reversal of 6448961642 is 2461698446.

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

It is not an unprimeable number, because it can be changed into a prime (6448961647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157118 + ... + 193865.

It is an arithmetic number, because the mean of its divisors is an integer number (1209315372).

Almost surely, 2^6448961642 is an apocalyptic number.

6448961642 is a deficient number, since it is larger than the sum of its proper divisors (3225561334).

6448961642 is a wasteful number, since it uses less digits than its factorization.

6448961642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360172.

The product of its digits is 1990656, while the sum is 50.

The square root of 6448961642 is about 80305.4272263089. The cubic root of 6448961642 is about 1861.3580903083.

The spelling of 6448961642 in words is "six billion, four hundred forty-eight million, nine hundred sixty-one thousand, six hundred forty-two".