1990353 has 8 divisors (see below), whose sum is σ = 2660608. Its totient is φ = 1323504.

The previous prime is 1990337. The next prime is 1990361. The reversal of 1990353 is 3530991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1990353 - 2⁴ = 1990337 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 1990353.

It is not an unprimeable number, because it can be changed into a prime (1990253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1275 + ... + 2367.

It is an arithmetic number, because the mean of its divisors is an integer number (332576).

2^1990353 is an apocalyptic number.

It is an amenable number.

1990353 is a deficient number, since it is larger than the sum of its proper divisors (670255).

1990353 is a wasteful number, since it uses less digits than its factorization.

1990353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 1990353 is about 1410.7987099512. The cubic root of 1990353 is about 125.7892041020.

The spelling of 1990353 in words is "one million, nine hundred ninety thousand, three hundred fifty-three".