1617165005 has 4 divisors (see below), whose sum is σ = 1940598012. Its totient is φ = 1293732000.

The previous prime is 1617164971. The next prime is 1617165007. The reversal of 1617165005 is 5005617161.

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 744907849 + 872257156 = 27293^2 + 29534^2 .

It is not a de Polignac number, because 1617165005 - 2⁸ = 1617164749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1617165007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161716496 + ... + 161716505.

It is an arithmetic number, because the mean of its divisors is an integer number (485149503).

Almost surely, 2^1617165005 is an apocalyptic number.

It is an amenable number.

1617165005 is a deficient number, since it is larger than the sum of its proper divisors (323433007).

1617165005 is an equidigital number, since it uses as much as digits as its factorization.

1617165005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323433006.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 1617165005 is about 40213.9901651154. The cubic root of 1617165005 is about 1173.7747916914.

The spelling of 1617165005 in words is "one billion, six hundred seventeen million, one hundred sixty-five thousand, five".