4138122557 has 4 divisors (see below), whose sum is σ = 4144235676. Its totient is φ = 4132009440.

The previous prime is 4138122523. The next prime is 4138122563. The reversal of 4138122557 is 7552218314.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2652868036 + 1485254521 = 51506^2 + 38539^2 .

It is a cyclic number.

It is not a de Polignac number, because 4138122557 - 2¹⁴ = 4138106173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4138122557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138122757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3055544 + ... + 3056897.

It is an arithmetic number, because the mean of its divisors is an integer number (1036058919).

Almost surely, 2^4138122557 is an apocalyptic number.

It is an amenable number.

4138122557 is a deficient number, since it is larger than the sum of its proper divisors (6113119).

4138122557 is an equidigital number, since it uses as much as digits as its factorization.

4138122557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6113118.

The product of its digits is 67200, while the sum is 38.

The square root of 4138122557 is about 64328.2407423054. The cubic root of 4138122557 is about 1605.4660133646.

The spelling of 4138122557 in words is "four billion, one hundred thirty-eight million, one hundred twenty-two thousand, five hundred fifty-seven".