1980593 has 4 divisors (see below), whose sum is σ = 1989120. Its totient is φ = 1972068.

The previous prime is 1980581. The next prime is 1980607. The reversal of 1980593 is 3950891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1980593 - 2⁴ = 1980577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3905 + ... + 4382.

It is an arithmetic number, because the mean of its divisors is an integer number (497280).

2^1980593 is an apocalyptic number.

It is an amenable number.

1980593 is a deficient number, since it is larger than the sum of its proper divisors (8527).

1980593 is an equidigital number, since it uses as much as digits as its factorization.

1980593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8526.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1980593 is about 1407.3354255472. The cubic root of 1980593 is about 125.5832582456.

The spelling of 1980593 in words is "one million, nine hundred eighty thousand, five hundred ninety-three".