1913867 has 2 divisors, whose sum is σ = 1913868. Its totient is φ = 1913866.

The previous prime is 1913861. The next prime is 1913893. The reversal of 1913867 is 7683191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1913867 - 2⁶ = 1913803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1913861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956933 + 956934.

It is an arithmetic number, because the mean of its divisors is an integer number (956934).

2^1913867 is an apocalyptic number.

1913867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913867 is an equidigital number, since it uses as much as digits as its factorization.

1913867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 1913867 is about 1383.4258202014. The cubic root of 1913867 is about 124.1568211843.

The spelling of 1913867 in words is "one million, nine hundred thirteen thousand, eight hundred sixty-seven".