2145266485 has 4 divisors (see below), whose sum is σ = 2574319788. Its totient is φ = 1716213184.

The previous prime is 2145266479. The next prime is 2145266507. The reversal of 2145266485 is 5846625412.

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 242300356 + 1902966129 = 15566^2 + 43623^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145266485 - 2⁹ = 2145265973 is a prime.

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, 214526644 + ... + 214526653.

It is an arithmetic number, because the mean of its divisors is an integer number (643579947).

Almost surely, 2^2145266485 is an apocalyptic number.

It is an amenable number.

2145266485 is a deficient number, since it is larger than the sum of its proper divisors (429053303).

2145266485 is an equidigital number, since it uses as much as digits as its factorization.

2145266485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429053302.

The product of its digits is 460800, while the sum is 43.

The square root of 2145266485 is about 46317.0215471591. The cubic root of 2145266485 is about 1289.7149952270.

The spelling of 2145266485 in words is "two billion, one hundred forty-five million, two hundred sixty-six thousand, four hundred eighty-five".