11822618 has 4 divisors (see below), whose sum is σ = 17733930. Its totient is φ = 5911308.

The previous prime is 11822611. The next prime is 11822623. The reversal of 11822618 is 81622811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7689529 + 4133089 = 2773^2 + 2033^2 .

It is not an unprimeable number, because it can be changed into a prime (11822611) 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, 2955653 + ... + 2955656.

Almost surely, 2^11822618 is an apocalyptic number.

11822618 is a deficient number, since it is larger than the sum of its proper divisors (5911312).

11822618 is an equidigital number, since it uses as much as digits as its factorization.

11822618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911311.

The product of its digits is 1536, while the sum is 29.

The square root of 11822618 is about 3438.4034085604. The cubic root of 11822618 is about 227.8091791110.

The spelling of 11822618 in words is "eleven million, eight hundred twenty-two thousand, six hundred eighteen".