1866367 has 2 divisors, whose sum is σ = 1866368. Its totient is φ = 1866366.

The previous prime is 1866349. The next prime is 1866373. The reversal of 1866367 is 7636681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1866367 - 2⁷ = 1866239 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 (1866307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 933183 + 933184.

It is an arithmetic number, because the mean of its divisors is an integer number (933184).

2^1866367 is an apocalyptic number.

1866367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1866367 is an equidigital number, since it uses as much as digits as its factorization.

1866367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 1866367 is about 1366.1504309555. The cubic root of 1866367 is about 123.1210608822.

The spelling of 1866367 in words is "one million, eight hundred sixty-six thousand, three hundred sixty-seven".