3091486861 has 2 divisors, whose sum is σ = 3091486862. Its totient is φ = 3091486860.

The previous prime is 3091486859. The next prime is 3091486877. The reversal of 3091486861 is 1686841903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2989355625 + 102131236 = 54675^2 + 10106^2 .

It is a cyclic number.

It is not a de Polignac number, because 3091486861 - 2¹ = 3091486859 is a prime.

Together with 3091486859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3091486361) 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, 1545743430 + 1545743431.

It is an arithmetic number, because the mean of its divisors is an integer number (1545743431).

Almost surely, 2^3091486861 is an apocalyptic number.

It is an amenable number.

3091486861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3091486861 is an equidigital number, since it uses as much as digits as its factorization.

3091486861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 3091486861 is about 55601.1408246270. The cubic root of 3091486861 is about 1456.7637803588.

The spelling of 3091486861 in words is "three billion, ninety-one million, four hundred eighty-six thousand, eight hundred sixty-one".