2961992881 has 2 divisors, whose sum is σ = 2961992882. Its totient is φ = 2961992880.

The previous prime is 2961992879. The next prime is 2961992893. The reversal of 2961992881 is 1882991692.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2829282481 + 132710400 = 53191^2 + 11520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2961992881 - 2¹ = 2961992879 is a prime.

It is a super-2 number, since 2×2961992881² = 17546803654189360322, which contains 22 as substring.

Together with 2961992879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2961992801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1480996440 + 1480996441.

It is an arithmetic number, because the mean of its divisors is an integer number (1480996441).

Almost surely, 2^2961992881 is an apocalyptic number.

It is an amenable number.

2961992881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2961992881 is an equidigital number, since it uses as much as digits as its factorization.

2961992881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 55.

The square root of 2961992881 is about 54424.1938938924. The cubic root of 2961992881 is about 1436.1330278774.

It can be divided in two parts, 29619 and 92881, that added together give a square (122500 = 350²).

The spelling of 2961992881 in words is "two billion, nine hundred sixty-one million, nine hundred ninety-two thousand, eight hundred eighty-one".