8236609481 has 2 divisors, whose sum is σ = 8236609482. Its totient is φ = 8236609480.

The previous prime is 8236609471. The next prime is 8236609501. The reversal of 8236609481 is 1849066328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4667622400 + 3568987081 = 68320^2 + 59741^2 .

It is a cyclic number.

It is not a de Polignac number, because 8236609481 - 2¹⁴ = 8236593097 is a prime.

It is a super-2 number, since 2×8236609481² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8236609471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4118304740 + 4118304741.

It is an arithmetic number, because the mean of its divisors is an integer number (4118304741).

Almost surely, 2^8236609481 is an apocalyptic number.

It is an amenable number.

8236609481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8236609481 is an equidigital number, since it uses as much as digits as its factorization.

8236609481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 8236609481 is about 90755.7683070338. The cubic root of 8236609481 is about 2019.5262001045.

The spelling of 8236609481 in words is "eight billion, two hundred thirty-six million, six hundred nine thousand, four hundred eighty-one".