11518491 has 16 divisors (see below), whose sum is σ = 15692544. Its totient is φ = 7513824.

The previous prime is 11518489. The next prime is 11518501. The reversal of 11518491 is 19481511.

It is a happy number.

It is not a de Polignac number, because 11518491 - 2¹ = 11518489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11518411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41445 + ... + 41721.

It is an arithmetic number, because the mean of its divisors is an integer number (980784).

Almost surely, 2^11518491 is an apocalyptic number.

11518491 is a deficient number, since it is larger than the sum of its proper divisors (4174053).

11518491 is a wasteful number, since it uses less digits than its factorization.

11518491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530.

The product of its digits is 1440, while the sum is 30.

The square root of 11518491 is about 3393.8902457210. The cubic root of 11518491 is about 225.8387852275.

The spelling of 11518491 in words is "eleven million, five hundred eighteen thousand, four hundred ninety-one".