2089963945 has 4 divisors (see below), whose sum is σ = 2507956740. Its totient is φ = 1671971152.

The previous prime is 2089963937. The next prime is 2089963951. The reversal of 2089963945 is 5493699802.

It is a happy number.

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 1266790464 + 823173481 = 35592^2 + 28691^2 .

It is a cyclic number.

It is not a de Polignac number, because 2089963945 - 2³ = 2089963937 is a prime.

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, 208996390 + ... + 208996399.

It is an arithmetic number, because the mean of its divisors is an integer number (626989185).

Almost surely, 2^2089963945 is an apocalyptic number.

It is an amenable number.

2089963945 is a deficient number, since it is larger than the sum of its proper divisors (417992795).

2089963945 is an equidigital number, since it uses as much as digits as its factorization.

2089963945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417992794.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The square root of 2089963945 is about 45716.1234686407. The cubic root of 2089963945 is about 1278.5359124547.

The spelling of 2089963945 in words is "two billion, eighty-nine million, nine hundred sixty-three thousand, nine hundred forty-five".