1418621 has 2 divisors, whose sum is σ = 1418622. Its totient is φ = 1418620.

The previous prime is 1418611. The next prime is 1418687. The reversal of 1418621 is 1268141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1413721 + 4900 = 1189^2 + 70^2 .

It is a cyclic number.

It is not a de Polignac number, because 1418621 - 2¹⁰ = 1417597 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1418611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 709310 + 709311.

It is an arithmetic number, because the mean of its divisors is an integer number (709311).

2^1418621 is an apocalyptic number.

It is an amenable number.

1418621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1418621 is an equidigital number, since it uses as much as digits as its factorization.

1418621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 23.

The square root of 1418621 is about 1191.0587726892. The cubic root of 1418621 is about 112.3626900901.

The spelling of 1418621 in words is "one million, four hundred eighteen thousand, six hundred twenty-one".