2981596817 has 4 divisors (see below), whose sum is σ = 2982462756. Its totient is φ = 2980730880.

The previous prime is 2981596769. The next prime is 2981596819. The reversal of 2981596817 is 7186951892.

It is a Cunningham number, because it is equal to 54604²+1.

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 42981136 + 2938615681 = 6556^2 + 54209^2 .

It is a cyclic number.

It is not a de Polignac number, because 2981596817 - 2⁶ = 2981596753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2981596819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427784 + ... + 434697.

It is an arithmetic number, because the mean of its divisors is an integer number (745615689).

Almost surely, 2^2981596817 is an apocalyptic number.

It is an amenable number.

2981596817 is a deficient number, since it is larger than the sum of its proper divisors (865939).

2981596817 is an equidigital number, since it uses as much as digits as its factorization.

2981596817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865938.

The product of its digits is 2177280, while the sum is 56.

The square root of 2981596817 is about 54604.0000091568. Note that the first 5 decimals coincide. The cubic root of 2981596817 is about 1439.2944101416.

The spelling of 2981596817 in words is "two billion, nine hundred eighty-one million, five hundred ninety-six thousand, eight hundred seventeen".