2786145121 has 2 divisors, whose sum is σ = 2786145122. Its totient is φ = 2786145120.

The previous prime is 2786145091. The next prime is 2786145133. The reversal of 2786145121 is 1215416872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2775182400 + 10962721 = 52680^2 + 3311^2 .

It is a cyclic number.

It is not a de Polignac number, because 2786145121 - 2⁷ = 2786144993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2786145191) 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, 1393072560 + 1393072561.

It is an arithmetic number, because the mean of its divisors is an integer number (1393072561).

Almost surely, 2^2786145121 is an apocalyptic number.

It is an amenable number.

2786145121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2786145121 is an equidigital number, since it uses as much as digits as its factorization.

2786145121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 2786145121 is about 52783.9475693132. The cubic root of 2786145121 is about 1407.1311521037.

The spelling of 2786145121 in words is "two billion, seven hundred eighty-six million, one hundred forty-five thousand, one hundred twenty-one".