1990003202171 has 2 divisors, whose sum is σ = 1990003202172. Its totient is φ = 1990003202170.

The previous prime is 1990003202153. The next prime is 1990003202189. The reversal of 1990003202171 is 1712023000991.

It is a balanced prime because it is at equal distance from previous prime (1990003202153) and next prime (1990003202189).

It is a cyclic number.

It is not a de Polignac number, because 1990003202171 - 2⁶ = 1990003202107 is a prime.

It is a super-2 number, since 2×1990003202171² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1990003202071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995001601085 + 995001601086.

It is an arithmetic number, because the mean of its divisors is an integer number (995001601086).

Almost surely, 2^{1990003202171} is an apocalyptic number.

1990003202171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990003202171 is an equidigital number, since it uses as much as digits as its factorization.

1990003202171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 35.

The spelling of 1990003202171 in words is "one trillion, nine hundred ninety billion, three million, two hundred two thousand, one hundred seventy-one".