1080860861 has 2 divisors, whose sum is σ = 1080860862. Its totient is φ = 1080860860.

The previous prime is 1080860813. The next prime is 1080860881. The reversal of 1080860861 is 1680680801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 672416761 + 408444100 = 25931^2 + 20210^2 .

It is an emirp because it is prime and its reverse (1680680801) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1980980801 and 1080890891.

It is a cyclic number.

It is not a de Polignac number, because 1080860861 - 2¹⁰ = 1080859837 is a prime.

It is a super-2 number, since 2×1080860861² = 2336520401683322642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1080860881) 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, 540430430 + 540430431.

It is an arithmetic number, because the mean of its divisors is an integer number (540430431).

Almost surely, 2^1080860861 is an apocalyptic number.

It is an amenable number.

1080860861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080860861 is an equidigital number, since it uses as much as digits as its factorization.

1080860861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1080860861 is about 32876.4484243660. The cubic root of 1080860861 is about 1026.2580977571.

The spelling of 1080860861 in words is "one billion, eighty million, eight hundred sixty thousand, eight hundred sixty-one".