6390956642 has 32 divisors (see below), whose sum is σ = 11604902400. Its totient is φ = 2576862720.

The previous prime is 6390956599. The next prime is 6390956681. The reversal of 6390956642 is 2466590936.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1089734 + ... + 1095582.

It is an arithmetic number, because the mean of its divisors is an integer number (362653200).

Almost surely, 2^6390956642 is an apocalyptic number.

6390956642 is a deficient number, since it is larger than the sum of its proper divisors (5213945758).

6390956642 is a wasteful number, since it uses less digits than its factorization.

6390956642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10466.

The product of its (nonzero) digits is 2099520, while the sum is 50.

The square root of 6390956642 is about 79943.4590319934. The cubic root of 6390956642 is about 1855.7606306144.

The spelling of 6390956642 in words is "six billion, three hundred ninety million, nine hundred fifty-six thousand, six hundred forty-two".