1984159 has 2 divisors, whose sum is σ = 1984160. Its totient is φ = 1984158.

The previous prime is 1984139. The next prime is 1984163. The reversal of 1984159 is 9514891.

It is a strong prime.

It is an emirp because it is prime and its reverse (9514891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1984159 - 2⁹ = 1983647 is a prime.

1984159 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1984109) 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, 992079 + 992080.

It is an arithmetic number, because the mean of its divisors is an integer number (992080).

2^1984159 is an apocalyptic number.

1984159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984159 is an equidigital number, since it uses as much as digits as its factorization.

1984159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 37.

The square root of 1984159 is about 1408.6017890092. The cubic root of 1984159 is about 125.6585827232.

It can be divided in two parts, 19841 and 59, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 1984159 in words is "one million, nine hundred eighty-four thousand, one hundred fifty-nine".