8160610405 has 4 divisors (see below), whose sum is σ = 9792732492. Its totient is φ = 6528488320.

The previous prime is 8160610399. The next prime is 8160610421. The reversal of 8160610405 is 5040160618.

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 3388287681 + 4772322724 = 58209^2 + 69082^2 .

It is not a de Polignac number, because 8160610405 - 2³ = 8160610397 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.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816061036 + ... + 816061045.

It is an arithmetic number, because the mean of its divisors is an integer number (2448183123).

Almost surely, 2^8160610405 is an apocalyptic number.

It is an amenable number.

8160610405 is a deficient number, since it is larger than the sum of its proper divisors (1632122087).

8160610405 is a wasteful number, since it uses less digits than its factorization.

8160610405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632122086.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 8160610405 is about 90336.0969103713. The cubic root of 8160610405 is about 2013.2956178306.

The spelling of 8160610405 in words is "eight billion, one hundred sixty million, six hundred ten thousand, four hundred five".