1000199871149 has 2 divisors, whose sum is σ = 1000199871150. Its totient is φ = 1000199871148.

The previous prime is 1000199871133. The next prime is 1000199871157. The reversal of 1000199871149 is 9411789910001.

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., 624246948649 + 375952922500 = 790093^2 + 613150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000199871149 - 2⁴ = 1000199871133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000199871097 and 1000199871106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000199871049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500099935574 + 500099935575.

It is an arithmetic number, because the mean of its divisors is an integer number (500099935575).

Almost surely, 2^{1000199871149} is an apocalyptic number.

It is an amenable number.

1000199871149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000199871149 is an equidigital number, since it uses as much as digits as its factorization.

1000199871149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 50.

The spelling of 1000199871149 in words is "one trillion, one hundred ninety-nine million, eight hundred seventy-one thousand, one hundred forty-nine".