1873 has 2 divisors, whose sum is σ = 1874. Its totient is φ = 1872.

The previous prime is 1871. The next prime is 1877. The reversal of 1873 is 3781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1089 + 784 = 33^2 + 28^2 .

It is a cyclic number.

It is not a de Polignac number, because 1873 - 2^{1} = 1871 is a prime.

Together with 1871, it forms a pair of twin primes.

It is a nialpdrome in base 13 and base 16.

It is a self number, because there is not a number *n* which added to its sum of digits gives 1873.

It is not a weakly prime, because it can be changed into another prime (1871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936 + 937.

It is an arithmetic number, because the mean of its divisors is an integer number (937).

It is an amenable number.

1873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1873 is an equidigital number, since it uses as much as digits as its factorization.

1873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 19.

The square root of 1873 is about 43.2781700168. The cubic root of 1873 is about 12.3266744348.

It can be divided in two parts, 187 and 3, that multiplied together give a triangular number (561 = T_{33}).

The spelling of 1873 in words is "one thousand, eight hundred seventy-three".

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