6436543642 has 8 divisors (see below), whose sum is σ = 9730838016. Its totient is φ = 3192930972.

The previous prime is 6436543567. The next prime is 6436543657. The reversal of 6436543642 is 2463456346.

It is a happy number.

6436543642 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12670108 + ... + 12670615.

It is an arithmetic number, because the mean of its divisors is an integer number (1216354752).

Almost surely, 2^6436543642 is an apocalyptic number.

6436543642 is a deficient number, since it is larger than the sum of its proper divisors (3294294374).

6436543642 is a wasteful number, since it uses less digits than its factorization.

6436543642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25340852.

The product of its digits is 1244160, while the sum is 43.

The square root of 6436543642 is about 80228.0726553991. The cubic root of 6436543642 is about 1860.1625905196.

Adding to 6436543642 its reverse (2463456346), we get a palindrome (8899999988).

The spelling of 6436543642 in words is "six billion, four hundred thirty-six million, five hundred forty-three thousand, six hundred forty-two".