1823903 has 2 divisors, whose sum is σ = 1823904. Its totient is φ = 1823902.

The previous prime is 1823863. The next prime is 1823911. The reversal of 1823903 is 3093281.

It is a strong prime.

It is an emirp because it is prime and its reverse (3093281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1823903 - 2¹⁸ = 1561759 is a prime.

It is a Sophie Germain prime.

It is equal to p₁₃₆₇₂₇ and since 1823903 and 136727 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1823953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911951 + 911952.

It is an arithmetic number, because the mean of its divisors is an integer number (911952).

2^1823903 is an apocalyptic number.

1823903 is a deficient number, since it is larger than the sum of its proper divisors (1).

1823903 is an equidigital number, since it uses as much as digits as its factorization.

1823903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1823903 is about 1350.5195296626. The cubic root of 1823903 is about 122.1801289697.

The spelling of 1823903 in words is "one million, eight hundred twenty-three thousand, nine hundred three".