1080699859 has 2 divisors, whose sum is σ = 1080699860. Its totient is φ = 1080699858.

The previous prime is 1080699857. The next prime is 1080699887. The reversal of 1080699859 is 9589960801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1080699859 - 2¹ = 1080699857 is a prime.

Together with 1080699857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1080699857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540349929 + 540349930.

It is an arithmetic number, because the mean of its divisors is an integer number (540349930).

Almost surely, 2^1080699859 is an apocalyptic number.

1080699859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080699859 is an equidigital number, since it uses as much as digits as its factorization.

1080699859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 55.

The square root of 1080699859 is about 32873.9997414370. Note that the first 3 decimals coincide. The cubic root of 1080699859 is about 1026.2071390515.

The spelling of 1080699859 in words is "one billion, eighty million, six hundred ninety-nine thousand, eight hundred fifty-nine".