1873985 has 4 divisors (see below), whose sum is σ = 2248788. Its totient is φ = 1499184.

The previous prime is 1873979. The next prime is 1874003. The reversal of 1873985 is 5893781.

It is a happy number.

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 238144 + 1635841 = 488^2 + 1279^2 .

It is a cyclic number.

It is not a de Polignac number, because 1873985 - 2⁴ = 1873969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187394 + ... + 187403.

It is an arithmetic number, because the mean of its divisors is an integer number (562197).

2^1873985 is an apocalyptic number.

It is an amenable number.

1873985 is a deficient number, since it is larger than the sum of its proper divisors (374803).

1873985 is an equidigital number, since it uses as much as digits as its factorization.

1873985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374802.

The product of its digits is 60480, while the sum is 41.

The square root of 1873985 is about 1368.9357179941. The cubic root of 1873985 is about 123.2883489869.

The spelling of 1873985 in words is "one million, eight hundred seventy-three thousand, nine hundred eighty-five".