1078641859 has 2 divisors, whose sum is σ = 1078641860. Its totient is φ = 1078641858.

The previous prime is 1078641847. The next prime is 1078641887. The reversal of 1078641859 is 9581468701.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1078641859 - 2⁵ = 1078641827 is a prime.

It is not a weakly prime, because it can be changed into another prime (1078641059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539320929 + 539320930.

It is an arithmetic number, because the mean of its divisors is an integer number (539320930).

Almost surely, 2^1078641859 is an apocalyptic number.

1078641859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078641859 is an equidigital number, since it uses as much as digits as its factorization.

1078641859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 1078641859 is about 32842.6834926746. The cubic root of 1078641859 is about 1025.5553156690. Note that the first 3 decimals are identical.

The spelling of 1078641859 in words is "one billion, seventy-eight million, six hundred forty-one thousand, eight hundred fifty-nine".