1001998922849 has 2 divisors, whose sum is σ = 1001998922850. Its totient is φ = 1001998922848.

The previous prime is 1001998922783. The next prime is 1001998922863. The reversal of 1001998922849 is 9482298991001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994543463824 + 7455459025 = 997268^2 + 86345^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001998922849 - 2⁸ = 1001998922593 is a prime.

It is a super-3 number, since 3×1001998922849³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001998922791 and 1001998922800.

It is not a weakly prime, because it can be changed into another prime (1001998942849) 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, 500999461424 + 500999461425.

It is an arithmetic number, because the mean of its divisors is an integer number (500999461425).

Almost surely, 2^{1001998922849} is an apocalyptic number.

It is an amenable number.

1001998922849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001998922849 is an equidigital number, since it uses as much as digits as its factorization.

1001998922849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 62.

The spelling of 1001998922849 in words is "one trillion, one billion, nine hundred ninety-eight million, nine hundred twenty-two thousand, eight hundred forty-nine".