4138091569 has 2 divisors, whose sum is σ = 4138091570. Its totient is φ = 4138091568.

The previous prime is 4138091561. The next prime is 4138091593. The reversal of 4138091569 is 9651908314.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3613452544 + 524639025 = 60112^2 + 22905^2 .

It is a cyclic number.

It is not a de Polignac number, because 4138091569 - 2³ = 4138091561 is a prime.

It is a super-2 number, since 2×4138091569² = 34247603666857763522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4138091561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069045784 + 2069045785.

It is an arithmetic number, because the mean of its divisors is an integer number (2069045785).

Almost surely, 2^4138091569 is an apocalyptic number.

It is an amenable number.

4138091569 is a deficient number, since it is larger than the sum of its proper divisors (1).

4138091569 is an equidigital number, since it uses as much as digits as its factorization.

4138091569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 4138091569 is about 64327.9998834100. Note that the first 3 decimals coincide. The cubic root of 4138091569 is about 1605.4620058866.

The spelling of 4138091569 in words is "four billion, one hundred thirty-eight million, ninety-one thousand, five hundred sixty-nine".