1990372898203 has 2 divisors, whose sum is σ = 1990372898204. Its totient is φ = 1990372898202.

The previous prime is 1990372898183. The next prime is 1990372898233. The reversal of 1990372898203 is 3028982730991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1990372898203 - 2⁹ = 1990372897691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1990372898233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 995186449101 + 995186449102.

It is an arithmetic number, because the mean of its divisors is an integer number (995186449102).

Almost surely, 2^{1990372898203} is an apocalyptic number.

1990372898203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1990372898203 is an equidigital number, since it uses as much as digits as its factorization.

1990372898203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 1990372898203 in words is "one trillion, nine hundred ninety billion, three hundred seventy-two million, eight hundred ninety-eight thousand, two hundred three".