1990119175489 has 4 divisors (see below), whose sum is σ = 1990155901140. Its totient is φ = 1990082449840.

The previous prime is 1990119175487. The next prime is 1990119175523. The reversal of 1990119175489 is 9845719110991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1404917125264 + 585202050225 = 1185292^2 + 764985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1990119175489 - 2¹ = 1990119175487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1990119175489.

It is not an unprimeable number, because it can be changed into a prime (1990119175487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18281422 + ... + 18389959.

It is an arithmetic number, because the mean of its divisors is an integer number (497538975285).

Almost surely, 2^{1990119175489} is an apocalyptic number.

It is an amenable number.

1990119175489 is a deficient number, since it is larger than the sum of its proper divisors (36725651).

1990119175489 is an equidigital number, since it uses as much as digits as its factorization.

1990119175489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36725650.

The product of its (nonzero) digits is 7348320, while the sum is 64.

The spelling of 1990119175489 in words is "one trillion, nine hundred ninety billion, one hundred nineteen million, one hundred seventy-five thousand, four hundred eighty-nine".