4135261636 has 81 divisors (see below), whose sum is σ = 8279985357. Its totient is φ = 1805712480.

The previous prime is 4135261597. The next prime is 4135261649. The reversal of 4135261636 is 6361625314.

The square root of 4135261636 is 64306.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3700288900 + 434972736 = 60830^2 + 20856^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4135261595 and 4135261604.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 52345045 + ... + 52345123.

Almost surely, 2^4135261636 is an apocalyptic number.

4135261636 is the 64306-th square number.

It is an amenable number.

4135261636 is an abundant number, since it is smaller than the sum of its proper divisors (4144723721).

4135261636 is a wasteful number, since it uses less digits than its factorization.

4135261636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258 (or 129 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The cubic root of 4135261636 is about 1605.0959445496.

The spelling of 4135261636 in words is "four billion, one hundred thirty-five million, two hundred sixty-one thousand, six hundred thirty-six".