2901221609 has 16 divisors (see below), whose sum is σ = 3410320704. Its totient is φ = 2433240000.

The previous prime is 2901221599. The next prime is 2901221627. The reversal of 2901221609 is 9061221092.

2901221609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2901221609 - 2⁸ = 2901221353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2901224609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317387 + ... + 326399.

It is an arithmetic number, because the mean of its divisors is an integer number (213145044).

Almost surely, 2^2901221609 is an apocalyptic number.

It is an amenable number.

2901221609 is a deficient number, since it is larger than the sum of its proper divisors (509099095).

2901221609 is a wasteful number, since it uses less digits than its factorization.

2901221609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11288.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2901221609 is about 53862.9892319392. The cubic root of 2901221609 is about 1426.2433566353.

The spelling of 2901221609 in words is "two billion, nine hundred one million, two hundred twenty-one thousand, six hundred nine".