1872993 has 4 divisors (see below), whose sum is σ = 2497328. Its totient is φ = 1248660.

The previous prime is 1872971. The next prime is 1873013. The reversal of 1872993 is 3992781.

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 not a de Polignac number, because 1872993 - 2⁶ = 1872929 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1872943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312163 + ... + 312168.

It is an arithmetic number, because the mean of its divisors is an integer number (624332).

2^1872993 is an apocalyptic number.

It is an amenable number.

1872993 is a deficient number, since it is larger than the sum of its proper divisors (624335).

1872993 is an equidigital number, since it uses as much as digits as its factorization.

1872993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624334.

The product of its digits is 27216, while the sum is 39.

The square root of 1872993 is about 1368.5733447645. The cubic root of 1872993 is about 123.2665907856.

The spelling of 1872993 in words is "one million, eight hundred seventy-two thousand, nine hundred ninety-three".