2065440145 has 16 divisors (see below), whose sum is σ = 2534208768. Its totient is φ = 1615313920.

The previous prime is 2065440137. The next prime is 2065440161. The reversal of 2065440145 is 5410445602.

It is a happy number.

It is not a de Polignac number, because 2065440145 - 2³ = 2065440137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217905 + ... + 227185.

It is an arithmetic number, because the mean of its divisors is an integer number (158388048).

Almost surely, 2^2065440145 is an apocalyptic number.

It is an amenable number.

2065440145 is a deficient number, since it is larger than the sum of its proper divisors (468768623).

2065440145 is an equidigital number, since it uses as much as digits as its factorization.

2065440145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10280.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 2065440145 is about 45447.1137147344. The cubic root of 2065440145 is about 1273.5154105754.

Adding to 2065440145 its reverse (5410445602), we get a palindrome (7475885747).

The spelling of 2065440145 in words is "two billion, sixty-five million, four hundred forty thousand, one hundred forty-five".