5438126723 has 4 divisors (see below), whose sum is σ = 5438449440. Its totient is φ = 5437804008.

The previous prime is 5438126699. The next prime is 5438126731. The reversal of 5438126723 is 3276218345.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5438126723 - 2¹⁴ = 5438110339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5438026723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134603 + ... + 170276.

It is an arithmetic number, because the mean of its divisors is an integer number (1359612360).

Almost surely, 2^5438126723 is an apocalyptic number.

5438126723 is a deficient number, since it is larger than the sum of its proper divisors (322717).

5438126723 is a wasteful number, since it uses less digits than its factorization.

5438126723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322716.

The product of its digits is 241920, while the sum is 41.

The square root of 5438126723 is about 73743.6554762510. The cubic root of 5438126723 is about 1758.5299711795.

The spelling of 5438126723 in words is "five billion, four hundred thirty-eight million, one hundred twenty-six thousand, seven hundred twenty-three".