1806326 has 4 divisors (see below), whose sum is σ = 2709492. Its totient is φ = 903162.

The previous prime is 1806313. The next prime is 1806331. The reversal of 1806326 is 6236081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6236081 = 127 ⋅49103.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1806295 and 1806304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 451580 + ... + 451583.

It is an arithmetic number, because the mean of its divisors is an integer number (677373).

2^1806326 is an apocalyptic number.

1806326 is a deficient number, since it is larger than the sum of its proper divisors (903166).

1806326 is an equidigital number, since it uses as much as digits as its factorization.

1806326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903165.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1806326 is about 1343.9962797568. The cubic root of 1806326 is about 121.7863770362.

The spelling of 1806326 in words is "one million, eight hundred six thousand, three hundred twenty-six".