1980000859 has 2 divisors, whose sum is σ = 1980000860. Its totient is φ = 1980000858.

The previous prime is 1980000821. The next prime is 1980000877. The reversal of 1980000859 is 9580000891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1980000859 - 2²⁷ = 1845783131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1980000809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990000429 + 990000430.

It is an arithmetic number, because the mean of its divisors is an integer number (990000430).

Almost surely, 2^1980000859 is an apocalyptic number.

1980000859 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980000859 is an equidigital number, since it uses as much as digits as its factorization.

1980000859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1980000859 is about 44497.2005748676. The cubic root of 1980000859 is about 1255.7074172352.

The spelling of 1980000859 in words is "one billion, nine hundred eighty million, eight hundred fifty-nine", and thus it is an aban number.