1118618449 has 8 divisors (see below), whose sum is σ = 1206297792. Its totient is φ = 1031172240.

The previous prime is 1118618443. The next prime is 1118618467. The reversal of 1118618449 is 9448168111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1118618449 - 2³ = 1118618441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118618441) 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 7 ways as a sum of consecutive naturals, for example, 48247 + ... + 67564.

It is an arithmetic number, because the mean of its divisors is an integer number (150787224).

Almost surely, 2^1118618449 is an apocalyptic number.

It is an amenable number.

1118618449 is a deficient number, since it is larger than the sum of its proper divisors (87679343).

1118618449 is a wasteful number, since it uses less digits than its factorization.

1118618449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116567.

The product of its digits is 55296, while the sum is 43.

The square root of 1118618449 is about 33445.7538261586. The cubic root of 1118618449 is about 1038.0716389957.

The spelling of 1118618449 in words is "one billion, one hundred eighteen million, six hundred eighteen thousand, four hundred forty-nine".