8145404917 has 16 divisors (see below), whose sum is σ = 8843161600. Its totient is φ = 7458054912.

The previous prime is 8145404893. The next prime is 8145404921. The reversal of 8145404917 is 7194045418.

It is a cyclic number.

It is not a de Polignac number, because 8145404917 - 2²³ = 8137016309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145404987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867148 + ... + 876490.

It is an arithmetic number, because the mean of its divisors is an integer number (552697600).

Almost surely, 2^8145404917 is an apocalyptic number.

It is an amenable number.

8145404917 is a deficient number, since it is larger than the sum of its proper divisors (697756683).

8145404917 is a wasteful number, since it uses less digits than its factorization.

8145404917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9892.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 8145404917 is about 90251.8970271540. The cubic root of 8145404917 is about 2012.0443970622.

The spelling of 8145404917 in words is "eight billion, one hundred forty-five million, four hundred four thousand, nine hundred seventeen".