1155418018 has 16 divisors (see below), whose sum is σ = 1857360960. Its totient is φ = 537655536.

The previous prime is 1155418013. The next prime is 1155418021. The reversal of 1155418018 is 8108145511.

It is not an unprimeable number, because it can be changed into a prime (1155418013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337728 + ... + 341131.

It is an arithmetic number, because the mean of its divisors is an integer number (116085060).

Almost surely, 2^1155418018 is an apocalyptic number.

1155418018 is a deficient number, since it is larger than the sum of its proper divisors (701942942).

1155418018 is a wasteful number, since it uses less digits than its factorization.

1155418018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678921.

The product of its (nonzero) digits is 6400, while the sum is 34.

The square root of 1155418018 is about 33991.4403637151. The cubic root of 1155418018 is about 1049.3323095978.

The spelling of 1155418018 in words is "one billion, one hundred fifty-five million, four hundred eighteen thousand, eighteen".