1990573 has 8 divisors (see below), whose sum is σ = 2256800. Its totient is φ = 1740528.

The previous prime is 1990559. The next prime is 1990577. The reversal of 1990573 is 3750991.

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

It is a cyclic number.

It is not a de Polignac number, because 1990573 - 2¹³ = 1982381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3783 + ... + 4276.

It is an arithmetic number, because the mean of its divisors is an integer number (282100).

2^1990573 is an apocalyptic number.

1990573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1990573 is a deficient number, since it is larger than the sum of its proper divisors (266227).

1990573 is a wasteful number, since it uses less digits than its factorization.

1990573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8091.

The product of its (nonzero) digits is 8505, while the sum is 34.

The square root of 1990573 is about 1410.8766778142. The cubic root of 1990573 is about 125.7938385572.

The spelling of 1990573 in words is "one million, nine hundred ninety thousand, five hundred seventy-three".