2863381561 has 2 divisors, whose sum is σ = 2863381562. Its totient is φ = 2863381560.

The previous prime is 2863381531. The next prime is 2863381583. The reversal of 2863381561 is 1651833682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1683871225 + 1179510336 = 41035^2 + 34344^2 .

It is a cyclic number.

It is not a de Polignac number, because 2863381561 - 2²¹ = 2861284409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2863381511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1431690780 + 1431690781.

It is an arithmetic number, because the mean of its divisors is an integer number (1431690781).

Almost surely, 2^2863381561 is an apocalyptic number.

It is an amenable number.

2863381561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2863381561 is an equidigital number, since it uses as much as digits as its factorization.

2863381561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The square root of 2863381561 is about 53510.5742914426. The cubic root of 2863381561 is about 1420.0154665048.

The spelling of 2863381561 in words is "two billion, eight hundred sixty-three million, three hundred eighty-one thousand, five hundred sixty-one".