1155748818 has 32 divisors (see below), whose sum is σ = 2642826240. Its totient is φ = 330074640.

The previous prime is 1155748813. The next prime is 1155748819. The reversal of 1155748818 is 8188475511.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1155748813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135253 + ... + 143543.

It is an arithmetic number, because the mean of its divisors is an integer number (82588320).

Almost surely, 2^1155748818 is an apocalyptic number.

1155748818 is an abundant number, since it is smaller than the sum of its proper divisors (1487077422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155748818 is a wasteful number, since it uses less digits than its factorization.

1155748818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11622.

The product of its digits is 358400, while the sum is 48.

The square root of 1155748818 is about 33996.3059463819. The cubic root of 1155748818 is about 1049.4324424792.

The spelling of 1155748818 in words is "one billion, one hundred fifty-five million, seven hundred forty-eight thousand, eight hundred eighteen".