1087844971 has 2 divisors, whose sum is σ = 1087844972. Its totient is φ = 1087844970.

The previous prime is 1087844969. The next prime is 1087844999. The reversal of 1087844971 is 1794487801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1087844971 - 2¹ = 1087844969 is a prime.

Together with 1087844969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1087844911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543922485 + 543922486.

It is an arithmetic number, because the mean of its divisors is an integer number (543922486).

Almost surely, 2^1087844971 is an apocalyptic number.

1087844971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087844971 is an equidigital number, since it uses as much as digits as its factorization.

1087844971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 49.

The square root of 1087844971 is about 32982.4949177590. The cubic root of 1087844971 is about 1028.4637830588.

The spelling of 1087844971 in words is "one billion, eighty-seven million, eight hundred forty-four thousand, nine hundred seventy-one".