998730133 has 2 divisors, whose sum is σ = 998730134. Its totient is φ = 998730132.

The previous prime is 998730107. The next prime is 998730181. The reversal of 998730133 is 331037899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585543204 + 413186929 = 24198^2 + 20327^2 .

It is an emirp because it is prime and its reverse (331037899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998730133 - 2¹⁷ = 998599061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 998730133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998730533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499365066 + 499365067.

It is an arithmetic number, because the mean of its divisors is an integer number (499365067).

Almost surely, 2^998730133 is an apocalyptic number.

It is an amenable number.

998730133 is a deficient number, since it is larger than the sum of its proper divisors (1).

998730133 is an equidigital number, since it uses as much as digits as its factorization.

998730133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 998730133 is about 31602.6918631942. The cubic root of 998730133 is about 999.5765316999.

The spelling of 998730133 in words is "nine hundred ninety-eight million, seven hundred thirty thousand, one hundred thirty-three".