4134641261 has 4 divisors (see below), whose sum is σ = 4135405500. Its totient is φ = 4133877024.

The previous prime is 4134641237. The next prime is 4134641293. The reversal of 4134641261 is 1621464314.

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 999761161 + 3134880100 = 31619^2 + 55990^2 .

It is a cyclic number.

It is not a de Polignac number, because 4134641261 - 2³⁰ = 3060899437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4634641261) 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, 373946 + ... + 384843.

It is an arithmetic number, because the mean of its divisors is an integer number (1033851375).

Almost surely, 2^4134641261 is an apocalyptic number.

It is an amenable number.

4134641261 is a deficient number, since it is larger than the sum of its proper divisors (764239).

4134641261 is an equidigital number, since it uses as much as digits as its factorization.

4134641261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764238.

The product of its digits is 13824, while the sum is 32.

The square root of 4134641261 is about 64301.1762023060. The cubic root of 4134641261 is about 1605.0156746430.

The spelling of 4134641261 in words is "four billion, one hundred thirty-four million, six hundred forty-one thousand, two hundred sixty-one".