8145913 has 4 divisors (see below), whose sum is σ = 8181108. Its totient is φ = 8110720.

The previous prime is 8145911. The next prime is 8145919. The reversal of 8145913 is 3195418.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2424249 + 5721664 = 1557^2 + 2392^2 .

It is a cyclic number.

It is not a de Polignac number, because 8145913 - 2¹ = 8145911 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

8145913 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8145911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17248 + ... + 17713.

It is an arithmetic number, because the mean of its divisors is an integer number (2045277).

Almost surely, 2^8145913 is an apocalyptic number.

It is an amenable number.

8145913 is a deficient number, since it is larger than the sum of its proper divisors (35195).

8145913 is a wasteful number, since it uses less digits than its factorization.

8145913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35194.

The product of its digits is 4320, while the sum is 31.

The square root of 8145913 is about 2854.1045881327. The cubic root of 8145913 is about 201.2086231049.

The spelling of 8145913 in words is "eight million, one hundred forty-five thousand, nine hundred thirteen".