6442940546 has 32 divisors (see below), whose sum is σ = 11677685760. Its totient is φ = 2604382416.

The previous prime is 6442940533. The next prime is 6442940579. The reversal of 6442940546 is 6450492446.

It is a super-2 number, since 2×6442940546² = 83022965758581556232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6442940497 and 6442940506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7031 + ... + 113733.

It is an arithmetic number, because the mean of its divisors is an integer number (364927680).

Almost surely, 2^6442940546 is an apocalyptic number.

6442940546 is a deficient number, since it is larger than the sum of its proper divisors (5234745214).

6442940546 is a wasteful number, since it uses less digits than its factorization.

6442940546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106958.

The product of its (nonzero) digits is 829440, while the sum is 44.

The square root of 6442940546 is about 80267.9297478140. The cubic root of 6442940546 is about 1860.7786220604.

The spelling of 6442940546 in words is "six billion, four hundred forty-two million, nine hundred forty thousand, five hundred forty-six".