4135601381 has 2 divisors, whose sum is σ = 4135601382. Its totient is φ = 4135601380.

The previous prime is 4135601369. The next prime is 4135601387. The reversal of 4135601381 is 1831065314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4040636356 + 94965025 = 63566^2 + 9745^2 .

It is a cyclic number.

It is not a de Polignac number, because 4135601381 - 2¹⁸ = 4135339237 is a prime.

It is a super-2 number, since 2×4135601381² = 34206397565058214322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4135601387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2067800690 + 2067800691.

It is an arithmetic number, because the mean of its divisors is an integer number (2067800691).

Almost surely, 2^4135601381 is an apocalyptic number.

It is an amenable number.

4135601381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4135601381 is an equidigital number, since it uses as much as digits as its factorization.

4135601381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 4135601381 is about 64308.6415732754. The cubic root of 4135601381 is about 1605.1399005260.

Adding to 4135601381 its reverse (1831065314), we get a palindrome (5966666695).

The spelling of 4135601381 in words is "four billion, one hundred thirty-five million, six hundred one thousand, three hundred eighty-one".