2881991129 has 2 divisors, whose sum is σ = 2881991130. Its totient is φ = 2881991128.

The previous prime is 2881991059. The next prime is 2881991137. The reversal of 2881991129 is 9211991882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2381440000 + 500551129 = 48800^2 + 22373^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2881991129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2881991729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1440995564 + 1440995565.

It is an arithmetic number, because the mean of its divisors is an integer number (1440995565).

Almost surely, 2^2881991129 is an apocalyptic number.

It is an amenable number.

2881991129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2881991129 is an equidigital number, since it uses as much as digits as its factorization.

2881991129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 50.

The square root of 2881991129 is about 53684.1795038352. The cubic root of 2881991129 is about 1423.0851274396.

The spelling of 2881991129 in words is "two billion, eight hundred eighty-one million, nine hundred ninety-one thousand, one hundred twenty-nine".