1818407 has 2 divisors, whose sum is σ = 1818408. Its totient is φ = 1818406.

The previous prime is 1818379. The next prime is 1818409. The reversal of 1818407 is 7048181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1818407 - 2⁸ = 1818151 is a prime.

Together with 1818409, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1818407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1818409) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909203 + 909204.

It is an arithmetic number, because the mean of its divisors is an integer number (909204).

2^1818407 is an apocalyptic number.

1818407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818407 is an equidigital number, since it uses as much as digits as its factorization.

1818407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 1818407 is about 1348.4832219943. The cubic root of 1818407 is about 122.0572829625.

The spelling of 1818407 in words is "one million, eight hundred eighteen thousand, four hundred seven".