1138867 has 2 divisors, whose sum is σ = 1138868. Its totient is φ = 1138866.

The previous prime is 1138853. The next prime is 1138883. The reversal of 1138867 is 7688311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1138867 - 2¹¹ = 1136819 is a prime.

1138867 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1138367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569433 + 569434.

It is an arithmetic number, because the mean of its divisors is an integer number (569434).

2^1138867 is an apocalyptic number.

1138867 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138867 is an equidigital number, since it uses as much as digits as its factorization.

1138867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 34.

The square root of 1138867 is about 1067.1771174458. The cubic root of 1138867 is about 104.4297735626.

The spelling of 1138867 in words is "one million, one hundred thirty-eight thousand, eight hundred sixty-seven".