8194645089 has 6 divisors (see below), whose sum is σ = 11836709586. Its totient is φ = 5463096720.

The previous prime is 8194645049. The next prime is 8194645103. The reversal of 8194645089 is 9805464918.

It can be written as a sum of positive squares in only one way, i.e., 5419462689 + 2775182400 = 73617^2 + 52680^2 .

It is not a de Polignac number, because 8194645089 - 2⁸ = 8194644833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8194645009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 455258052 + ... + 455258069.

It is an arithmetic number, because the mean of its divisors is an integer number (1972784931).

Almost surely, 2^8194645089 is an apocalyptic number.

It is an amenable number.

8194645089 is a deficient number, since it is larger than the sum of its proper divisors (3642064497).

8194645089 is a wasteful number, since it uses less digits than its factorization.

8194645089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910516127 (or 910516124 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 8194645089 is about 90524.2790029283. The cubic root of 8194645089 is about 2016.0906228454.

The spelling of 8194645089 in words is "eight billion, one hundred ninety-four million, six hundred forty-five thousand, eighty-nine".