1873633 has 2 divisors, whose sum is σ = 1873634. Its totient is φ = 1873632.

The previous prime is 1873607. The next prime is 1873637. The reversal of 1873633 is 3363781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1871424 + 2209 = 1368^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 1873633 - 2⁹ = 1873121 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 8 + 7⁵ + 3³ + 6⁸ + 3³ + 3¹¹ .

It is a junction number, because it is equal to n+sod(n) for n = 1873595 and 1873604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1873637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936816 + 936817.

It is an arithmetic number, because the mean of its divisors is an integer number (936817).

2^1873633 is an apocalyptic number.

It is an amenable number.

1873633 is a deficient number, since it is larger than the sum of its proper divisors (1).

1873633 is an equidigital number, since it uses as much as digits as its factorization.

1873633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 1873633 is about 1368.8071449258. The cubic root of 1873633 is about 123.2806292139.

It can be divided in two parts, 18736 and 33, that added together give a square (18769 = 137²).

The spelling of 1873633 in words is "one million, eight hundred seventy-three thousand, six hundred thirty-three".