8403664189 has 2 divisors, whose sum is σ = 8403664190. Its totient is φ = 8403664188.

The previous prime is 8403664187. The next prime is 8403664229. The reversal of 8403664189 is 9814663048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6265988964 + 2137675225 = 79158^2 + 46235^2 .

It is a cyclic number.

It is not a de Polignac number, because 8403664189 - 2¹ = 8403664187 is a prime.

Together with 8403664187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8403664187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4201832094 + 4201832095.

It is an arithmetic number, because the mean of its divisors is an integer number (4201832095).

Almost surely, 2^8403664189 is an apocalyptic number.

It is an amenable number.

8403664189 is a deficient number, since it is larger than the sum of its proper divisors (1).

8403664189 is an equidigital number, since it uses as much as digits as its factorization.

8403664189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 8403664189 is about 91671.5015094659. The cubic root of 8403664189 is about 2033.0882475152.

It can be divided in two parts, 84036 and 64189, that added together give a square (148225 = 385²).

The spelling of 8403664189 in words is "eight billion, four hundred three million, six hundred sixty-four thousand, one hundred eighty-nine".