2981726409 has 16 divisors (see below), whose sum is σ = 3993520320. Its totient is φ = 1978893120.

The previous prime is 2981726329. The next prime is 2981726443. The reversal of 2981726409 is 9046271892.

It is not a de Polignac number, because 2981726409 - 2¹⁵ = 2981693641 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2981722409) 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, 921807 + ... + 925035.

It is an arithmetic number, because the mean of its divisors is an integer number (249595020).

Almost surely, 2^2981726409 is an apocalyptic number.

It is an amenable number.

2981726409 is a deficient number, since it is larger than the sum of its proper divisors (1011793911).

2981726409 is a wasteful number, since it uses less digits than its factorization.

2981726409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4520.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 2981726409 is about 54605.1866492552. The cubic root of 2981726409 is about 1439.3152623169.

The spelling of 2981726409 in words is "two billion, nine hundred eighty-one million, seven hundred twenty-six thousand, four hundred nine".