2961981089 has 4 divisors (see below), whose sum is σ = 2977016724. Its totient is φ = 2946945456.

The previous prime is 2961981019. The next prime is 2961981097. The reversal of 2961981089 is 9801891692.

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 2480836864 + 481144225 = 49808^2 + 21935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2961981089 - 2²⁸ = 2693545633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2961981089.

It is not an unprimeable number, because it can be changed into a prime (2961981019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7517522 + ... + 7517915.

It is an arithmetic number, because the mean of its divisors is an integer number (744254181).

Almost surely, 2^2961981089 is an apocalyptic number.

It is an amenable number.

2961981089 is a deficient number, since it is larger than the sum of its proper divisors (15035635).

2961981089 is a wasteful number, since it uses less digits than its factorization.

2961981089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15035634.

The product of its (nonzero) digits is 559872, while the sum is 53.

The square root of 2961981089 is about 54424.0855596123. The cubic root of 2961981089 is about 1436.1311220768.

The spelling of 2961981089 in words is "two billion, nine hundred sixty-one million, nine hundred eighty-one thousand, eighty-nine".