1358891 has 2 divisors, whose sum is σ = 1358892. Its totient is φ = 1358890.

The previous prime is 1358887. The next prime is 1358927. The reversal of 1358891 is 1988531.

It is a weak prime.

It is an emirp because it is prime and its reverse (1988531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1358891 - 2² = 1358887 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1358801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 679445 + 679446.

It is an arithmetic number, because the mean of its divisors is an integer number (679446).

2^1358891 is an apocalyptic number.

1358891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1358891 is an equidigital number, since it uses as much as digits as its factorization.

1358891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 35.

The square root of 1358891 is about 1165.7148021708. The cubic root of 1358891 is about 110.7630418427.

The spelling of 1358891 in words is "one million, three hundred fifty-eight thousand, eight hundred ninety-one".