2090166505 has 16 divisors (see below), whose sum is σ = 2909301120. Its totient is φ = 1411863552.

The previous prime is 2090166499. The next prime is 2090166517. The reversal of 2090166505 is 5056610902.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2090166505 - 2⁹ = 2090165993 is a prime.

It is a super-3 number, since 3×2090166505³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 443320 + ... + 448009.

It is an arithmetic number, because the mean of its divisors is an integer number (181831320).

Almost surely, 2^2090166505 is an apocalyptic number.

It is an amenable number.

2090166505 is a deficient number, since it is larger than the sum of its proper divisors (819134615).

2090166505 is an equidigital number, since it uses as much as digits as its factorization.

2090166505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891408.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 2090166505 is about 45718.3388259022. The cubic root of 2090166505 is about 1278.5772164955.

The spelling of 2090166505 in words is "two billion, ninety million, one hundred sixty-six thousand, five hundred five".