6434138458 has 36 divisors (see below), whose sum is σ = 10903374846. Its totient is φ = 2845418400.

The previous prime is 6434138453. The next prime is 6434138471. The reversal of 6434138458 is 8548314346.

It can be written as a sum of positive squares in 3 ways, for example, as 5534318449 + 899820009 = 74393^2 + 29997^2 .

It is not an unprimeable number, because it can be changed into a prime (6434138453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 321588 + ... + 341008.

Almost surely, 2^6434138458 is an apocalyptic number.

6434138458 is a deficient number, since it is larger than the sum of its proper divisors (4469236388).

6434138458 is a wasteful number, since it uses less digits than its factorization.

6434138458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19519 (or 19471 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 46.

The square root of 6434138458 is about 80213.0815889777. The cubic root of 6434138458 is about 1859.9308620773.

The spelling of 6434138458 in words is "six billion, four hundred thirty-four million, one hundred thirty-eight thousand, four hundred fifty-eight".