1801874 has 4 divisors (see below), whose sum is σ = 2702814. Its totient is φ = 900936.

The previous prime is 1801873. The next prime is 1801897. The reversal of 1801874 is 4781081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4781081 = 107 ⋅44683.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 714025 = 1043^2 + 845^2 .

It is an Ulam number.

It is a zygodrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (1801871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450467 + ... + 450470.

2^1801874 is an apocalyptic number.

1801874 is a deficient number, since it is larger than the sum of its proper divisors (900940).

1801874 is an equidigital number, since it uses as much as digits as its factorization.

1801874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900939.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 1801874 is about 1342.3390033818. The cubic root of 1801874 is about 121.6862402570.

The spelling of 1801874 in words is "one million, eight hundred one thousand, eight hundred seventy-four".