8621813089 has 2 divisors, whose sum is σ = 8621813090. Its totient is φ = 8621813088.

The previous prime is 8621813063. The next prime is 8621813119. The reversal of 8621813089 is 9803181268.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8601635025 + 20178064 = 92745^2 + 4492^2 .

It is a cyclic number.

It is not a de Polignac number, because 8621813089 - 2¹³ = 8621804897 is a prime.

It is not a weakly prime, because it can be changed into another prime (8621813009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4310906544 + 4310906545.

It is an arithmetic number, because the mean of its divisors is an integer number (4310906545).

Almost surely, 2^8621813089 is an apocalyptic number.

It is an amenable number.

8621813089 is a deficient number, since it is larger than the sum of its proper divisors (1).

8621813089 is an equidigital number, since it uses as much as digits as its factorization.

8621813089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 8621813089 is about 92853.7187677478. The cubic root of 8621813089 is about 2050.5303477334.

It can be divided in two parts, 862181 and 3089, that added together give a triangular number (865270 = T₁₃₁₅).

The spelling of 8621813089 in words is "eight billion, six hundred twenty-one million, eight hundred thirteen thousand, eighty-nine".