1872973 has 4 divisors (see below), whose sum is σ = 1892380. Its totient is φ = 1853568.

The previous prime is 1872971. The next prime is 1873013. The reversal of 1872973 is 3792781.

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 522729 + 1350244 = 723^2 + 1162^2 .

It is a cyclic number.

It is not a de Polignac number, because 1872973 - 2¹ = 1872971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872971) 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, 9558 + ... + 9751.

It is an arithmetic number, because the mean of its divisors is an integer number (473095).

2^1872973 is an apocalyptic number.

It is an amenable number.

1872973 is a deficient number, since it is larger than the sum of its proper divisors (19407).

1872973 is an equidigital number, since it uses as much as digits as its factorization.

1872973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19406.

The product of its digits is 21168, while the sum is 37.

The square root of 1872973 is about 1368.5660378659. The cubic root of 1872973 is about 123.2661520332.

It can be divided in two parts, 187 and 2973, that added together give a triangular number (3160 = T₇₉).

The spelling of 1872973 in words is "one million, eight hundred seventy-two thousand, nine hundred seventy-three".