2961990881 has 2 divisors, whose sum is σ = 2961990882. Its totient is φ = 2961990880.

The previous prime is 2961990833. The next prime is 2961990929. The reversal of 2961990881 is 1880991692.

It is a balanced prime because it is at equal distance from previous prime (2961990833) and next prime (2961990929).

It can be written as a sum of positive squares in only one way, i.e., 2958380881 + 3610000 = 54391^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 2961990881 - 2¹⁴ = 2961974497 is a prime.

It is a super-2 number, since 2×2961990881² = 17546779958254312322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2961992881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1480995440 + 1480995441.

It is an arithmetic number, because the mean of its divisors is an integer number (1480995441).

Almost surely, 2^2961990881 is an apocalyptic number.

It is an amenable number.

2961990881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2961990881 is an equidigital number, since it uses as much as digits as its factorization.

2961990881 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2961990881 is about 54424.1755197082. The cubic root of 2961990881 is about 1436.1327046415.

The spelling of 2961990881 in words is "two billion, nine hundred sixty-one million, nine hundred ninety thousand, eight hundred eighty-one".