1868443 has 2 divisors, whose sum is σ = 1868444. Its totient is φ = 1868442.

The previous prime is 1868423. The next prime is 1868459. The reversal of 1868443 is 3448681.

It is a strong prime.

It is an emirp because it is prime and its reverse (3448681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1868443 - 2¹³ = 1860251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1868399 and 1868408.

It is not a weakly prime, because it can be changed into another prime (1868423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934221 + 934222.

It is an arithmetic number, because the mean of its divisors is an integer number (934222).

2^1868443 is an apocalyptic number.

1868443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868443 is an equidigital number, since it uses as much as digits as its factorization.

1868443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 1868443 is about 1366.9100189844. The cubic root of 1868443 is about 123.1666940314.

The spelling of 1868443 in words is "one million, eight hundred sixty-eight thousand, four hundred forty-three".