1906323 has 4 divisors (see below), whose sum is σ = 2541768. Its totient is φ = 1270880.

The previous prime is 1906321. The next prime is 1906337. The reversal of 1906323 is 3236091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1906323 - 2¹ = 1906321 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1906293 and 1906302.

It is not an unprimeable number, because it can be changed into a prime (1906321) 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 in 3 ways as a sum of consecutive naturals, for example, 317718 + ... + 317723.

It is an arithmetic number, because the mean of its divisors is an integer number (635442).

2^1906323 is an apocalyptic number.

1906323 is a deficient number, since it is larger than the sum of its proper divisors (635445).

1906323 is an equidigital number, since it uses as much as digits as its factorization.

1906323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635444.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 1906323 is about 1380.6965633332. The cubic root of 1906323 is about 123.9934743357.

The spelling of 1906323 in words is "one million, nine hundred six thousand, three hundred twenty-three".