2867749681 has 2 divisors, whose sum is σ = 2867749682. Its totient is φ = 2867749680.

The previous prime is 2867749673. The next prime is 2867749813. The reversal of 2867749681 is 1869477682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1828332081 + 1039417600 = 42759^2 + 32240^2 .

It is a cyclic number.

It is not a de Polignac number, because 2867749681 - 2³ = 2867749673 is a prime.

It is a super-2 number, since 2×2867749681² = 16447976465751203522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2867749631) 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 as a sum of consecutive naturals, namely, 1433874840 + 1433874841.

It is an arithmetic number, because the mean of its divisors is an integer number (1433874841).

Almost surely, 2^2867749681 is an apocalyptic number.

It is an amenable number.

2867749681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2867749681 is an equidigital number, since it uses as much as digits as its factorization.

2867749681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 58.

The square root of 2867749681 is about 53551.3742213960. The cubic root of 2867749681 is about 1420.7371826939.

The spelling of 2867749681 in words is "two billion, eight hundred sixty-seven million, seven hundred forty-nine thousand, six hundred eighty-one".