998001019 has 2 divisors, whose sum is σ = 998001020. Its totient is φ = 998001018.

The previous prime is 998000999. The next prime is 998001097. The reversal of 998001019 is 910100899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998001019 - 2⁵ = 998000987 is a prime.

It is a super-2 number, since 2×998001019² = 1992012067850076722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (998001919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499000509 + 499000510.

It is an arithmetic number, because the mean of its divisors is an integer number (499000510).

Almost surely, 2^998001019 is an apocalyptic number.

998001019 is a deficient number, since it is larger than the sum of its proper divisors (1).

998001019 is an equidigital number, since it uses as much as digits as its factorization.

998001019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 998001019 is about 31591.1541257992. The cubic root of 998001019 is about 999.3332285146. Note that the first 3 decimals are identical.

The spelling of 998001019 in words is "nine hundred ninety-eight million, one thousand, nineteen".