6328011638 has 16 divisors (see below), whose sum is σ = 10415046096. Its totient is φ = 2865514080.

The previous prime is 6328011631. The next prime is 6328011647. The reversal of 6328011638 is 8361108236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6328011631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2294708 + ... + 2297463.

It is an arithmetic number, because the mean of its divisors is an integer number (650940381).

Almost surely, 2^6328011638 is an apocalyptic number.

6328011638 is a deficient number, since it is larger than the sum of its proper divisors (4087034458).

6328011638 is a wasteful number, since it uses less digits than its factorization.

6328011638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592239.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 6328011638 is about 79548.8003555050. The cubic root of 6328011638 is about 1849.6480107542.

The spelling of 6328011638 in words is "six billion, three hundred twenty-eight million, eleven thousand, six hundred thirty-eight".