2945481689 has 4 divisors (see below), whose sum is σ = 2945955600. Its totient is φ = 2945007780.

The previous prime is 2945481677. The next prime is 2945481691. The reversal of 2945481689 is 9861845492.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2945481689 - 2¹² = 2945477593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2945481619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227507 + ... + 240104.

It is an arithmetic number, because the mean of its divisors is an integer number (736488900).

Almost surely, 2^2945481689 is an apocalyptic number.

It is an amenable number.

2945481689 is a deficient number, since it is larger than the sum of its proper divisors (473911).

2945481689 is an equidigital number, since it uses as much as digits as its factorization.

2945481689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473910.

The product of its digits is 4976640, while the sum is 56.

The square root of 2945481689 is about 54272.2920927429. The cubic root of 2945481689 is about 1433.4595502277.

The spelling of 2945481689 in words is "two billion, nine hundred forty-five million, four hundred eighty-one thousand, six hundred eighty-nine".