8617849945 has 8 divisors (see below), whose sum is σ = 10581918336. Its totient is φ = 6733947696.

The previous prime is 8617849937. The next prime is 8617849951. The reversal of 8617849945 is 5499487168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8617849945 - 2³ = 8617849937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20041297 + ... + 20041726.

It is an arithmetic number, because the mean of its divisors is an integer number (1322739792).

Almost surely, 2^8617849945 is an apocalyptic number.

It is an amenable number.

8617849945 is a deficient number, since it is larger than the sum of its proper divisors (1964068391).

8617849945 is a wasteful number, since it uses less digits than its factorization.

8617849945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40083071.

The product of its digits is 17418240, while the sum is 61.

The square root of 8617849945 is about 92832.3755216896. The cubic root of 8617849945 is about 2050.2161140395.

The spelling of 8617849945 in words is "eight billion, six hundred seventeen million, eight hundred forty-nine thousand, nine hundred forty-five".