2798971121 has 6 divisors (see below), whose sum is σ = 2892174066. Its totient is φ = 2708680800.

The previous prime is 2798971117. The next prime is 2798971157. The reversal of 2798971121 is 1211798972.

It can be written as a sum of positive squares in only one way, i.e., 1777465600 + 1021505521 = 42160^2 + 31961^2 .

It is not a de Polignac number, because 2798971121 - 2² = 2798971117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2798971421) 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 5 ways as a sum of consecutive naturals, for example, 1455320 + ... + 1457241.

It is an arithmetic number, because the mean of its divisors is an integer number (482029011).

Almost surely, 2^2798971121 is an apocalyptic number.

It is an amenable number.

2798971121 is a deficient number, since it is larger than the sum of its proper divisors (93202945).

2798971121 is an equidigital number, since it uses as much as digits as its factorization.

2798971121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2912623 (or 2912592 counting only the distinct ones).

The product of its digits is 127008, while the sum is 47.

The square root of 2798971121 is about 52905.3033352990. The cubic root of 2798971121 is about 1409.2870867469.

The spelling of 2798971121 in words is "two billion, seven hundred ninety-eight million, nine hundred seventy-one thousand, one hundred twenty-one".