1812959 has 2 divisors, whose sum is σ = 1812960. Its totient is φ = 1812958.

The previous prime is 1812949. The next prime is 1812983. The reversal of 1812959 is 9592181.

It is a weak prime.

It is an emirp because it is prime and its reverse (9592181) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1812959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1812949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906479 + 906480.

It is an arithmetic number, because the mean of its divisors is an integer number (906480).

2^1812959 is an apocalyptic number.

1812959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1812959 is an equidigital number, since it uses as much as digits as its factorization.

1812959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 35.

The square root of 1812959 is about 1346.4616593130. The cubic root of 1812959 is about 121.9352653077.

The spelling of 1812959 in words is "one million, eight hundred twelve thousand, nine hundred fifty-nine".