1990322202873 has 32 divisors (see below), whose sum is σ = 2773456994304. Its totient is φ = 1267215630912.

The previous prime is 1990322202859. The next prime is 1990322202877. The reversal of 1990322202873 is 3782022230991.

It is a happy number.

It is not a de Polignac number, because 1990322202873 - 2⁴ = 1990322202857 is a prime.

It is a super-2 number, since 2×1990322202873² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1990322202877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145346415 + ... + 145360107.

It is an arithmetic number, because the mean of its divisors is an integer number (86670531072).

Almost surely, 2^{1990322202873} is an apocalyptic number.

It is an amenable number.

1990322202873 is a deficient number, since it is larger than the sum of its proper divisors (783134791431).

1990322202873 is a wasteful number, since it uses less digits than its factorization.

1990322202873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16845.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 1990322202873 in words is "one trillion, nine hundred ninety billion, three hundred twenty-two million, two hundred two thousand, eight hundred seventy-three".