8613790261 has 2 divisors, whose sum is σ = 8613790262. Its totient is φ = 8613790260.

The previous prime is 8613790247. The next prime is 8613790321. The reversal of 8613790261 is 1620973168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5804154225 + 2809636036 = 76185^2 + 53006^2 .

It is a cyclic number.

It is not a de Polignac number, because 8613790261 - 2¹⁷ = 8613659189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8613793261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4306895130 + 4306895131.

It is an arithmetic number, because the mean of its divisors is an integer number (4306895131).

Almost surely, 2^8613790261 is an apocalyptic number.

It is an amenable number.

8613790261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8613790261 is an equidigital number, since it uses as much as digits as its factorization.

8613790261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 8613790261 is about 92810.5072769242. The cubic root of 8613790261 is about 2049.8941258825.

The spelling of 8613790261 in words is "eight billion, six hundred thirteen million, seven hundred ninety thousand, two hundred sixty-one".