1984198829 has 2 divisors, whose sum is σ = 1984198830. Its totient is φ = 1984198828.

The previous prime is 1984198819. The next prime is 1984198847. The reversal of 1984198829 is 9288914891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1044776329 + 939422500 = 32323^2 + 30650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1984198829 - 2¹² = 1984194733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1984198819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992099414 + 992099415.

It is an arithmetic number, because the mean of its divisors is an integer number (992099415).

Almost surely, 2^1984198829 is an apocalyptic number.

It is an amenable number.

1984198829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1984198829 is an equidigital number, since it uses as much as digits as its factorization.

1984198829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 59.

The square root of 1984198829 is about 44544.3467681366. The cubic root of 1984198829 is about 1256.5942351978.

The spelling of 1984198829 in words is "one billion, nine hundred eighty-four million, one hundred ninety-eight thousand, eight hundred twenty-nine".