6442738234 has 32 divisors (see below), whose sum is σ = 10777968000. Its totient is φ = 2870484480.

The previous prime is 6442738207. The next prime is 6442738273. The reversal of 6442738234 is 4328372446.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1968019 + ... + 1971289.

It is an arithmetic number, because the mean of its divisors is an integer number (336811500).

Almost surely, 2^6442738234 is an apocalyptic number.

6442738234 is a deficient number, since it is larger than the sum of its proper divisors (4335229766).

6442738234 is a wasteful number, since it uses less digits than its factorization.

6442738234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6358.

The product of its digits is 774144, while the sum is 43.

The square root of 6442738234 is about 80266.6695085825. The cubic root of 6442738234 is about 1860.7591453539.

The spelling of 6442738234 in words is "six billion, four hundred forty-two million, seven hundred thirty-eight thousand, two hundred thirty-four".