1973005 has 4 divisors (see below), whose sum is σ = 2367612. Its totient is φ = 1578400.

The previous prime is 1972987. The next prime is 1973011. The reversal of 1973005 is 5003791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5003791 = 13 ⋅384907.

It can be written as a sum of positive squares in 2 ways, for example, as 1297321 + 675684 = 1139^2 + 822^2 .

It is not a de Polignac number, because 1973005 - 2¹¹ = 1970957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 197296 + ... + 197305.

It is an arithmetic number, because the mean of its divisors is an integer number (591903).

2^1973005 is an apocalyptic number.

It is an amenable number.

1973005 is a deficient number, since it is larger than the sum of its proper divisors (394607).

1973005 is an equidigital number, since it uses as much as digits as its factorization.

1973005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394606.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 1973005 is about 1404.6369637739. The cubic root of 1973005 is about 125.4226758170.

Adding to 1973005 its reverse (5003791), we get a palindrome (6976796).

The spelling of 1973005 in words is "one million, nine hundred seventy-three thousand, five".