11491807 has 2 divisors, whose sum is σ = 11491808. Its totient is φ = 11491806.

The previous prime is 11491787. The next prime is 11491841. The reversal of 11491807 is 70819411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11491807 - 2¹¹ = 11489759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11491877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5745903 + 5745904.

It is an arithmetic number, because the mean of its divisors is an integer number (5745904).

Almost surely, 2^11491807 is an apocalyptic number.

11491807 is a deficient number, since it is larger than the sum of its proper divisors (1).

11491807 is an equidigital number, since it uses as much as digits as its factorization.

11491807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 11491807 is about 3389.9567843853. The cubic root of 11491807 is about 225.6642559515.

The spelling of 11491807 in words is "eleven million, four hundred ninety-one thousand, eight hundred seven".