1916867 has 2 divisors, whose sum is σ = 1916868. Its totient is φ = 1916866.

The previous prime is 1916857. The next prime is 1916881. The reversal of 1916867 is 7686191.

It is a weak prime.

It is an emirp because it is prime and its reverse (7686191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1916867 - 2⁸ = 1916611 is a prime.

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 1916867.

It is not a weakly prime, because it can be changed into another prime (1916857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958433 + 958434.

It is an arithmetic number, because the mean of its divisors is an integer number (958434).

2^1916867 is an apocalyptic number.

1916867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916867 is an equidigital number, since it uses as much as digits as its factorization.

1916867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 1916867 is about 1384.5096604936. The cubic root of 1916867 is about 124.2216595484.

The spelling of 1916867 in words is "one million, nine hundred sixteen thousand, eight hundred sixty-seven".