6434748138 has 64 divisors (see below), whose sum is σ = 16030328832. Its totient is φ = 1676617920.

The previous prime is 6434748109. The next prime is 6434748161. The reversal of 6434748138 is 8318474346.

It is a happy number.

6434748138 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25678 + ... + 116313.

It is an arithmetic number, because the mean of its divisors is an integer number (250473888).

Almost surely, 2^6434748138 is an apocalyptic number.

6434748138 is an abundant number, since it is smaller than the sum of its proper divisors (9595580694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6434748138 is a wasteful number, since it uses less digits than its factorization.

6434748138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142099.

The product of its digits is 1548288, while the sum is 48.

The square root of 6434748138 is about 80216.8818765726. The cubic root of 6434748138 is about 1859.9896074110.

The spelling of 6434748138 in words is "six billion, four hundred thirty-four million, seven hundred forty-eight thousand, one hundred thirty-eight".