2885861761 has 2 divisors, whose sum is σ = 2885861762. Its totient is φ = 2885861760.

The previous prime is 2885861747. The next prime is 2885861779. The reversal of 2885861761 is 1671685882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2420640000 + 465221761 = 49200^2 + 21569^2 .

It is a cyclic number.

It is not a de Polignac number, because 2885861761 - 2⁷ = 2885861633 is a prime.

It is a super-2 number, since 2×2885861761² = 16656396207204042242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2885861699 and 2885861708.

It is not a weakly prime, because it can be changed into another prime (2885861791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1442930880 + 1442930881.

It is an arithmetic number, because the mean of its divisors is an integer number (1442930881).

Almost surely, 2^2885861761 is an apocalyptic number.

It is an amenable number.

2885861761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2885861761 is an equidigital number, since it uses as much as digits as its factorization.

2885861761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 52.

The square root of 2885861761 is about 53720.2174325458. The cubic root of 2885861761 is about 1423.7219296242.

The spelling of 2885861761 in words is "two billion, eight hundred eighty-five million, eight hundred sixty-one thousand, seven hundred sixty-one".