1155418028 has 12 divisors (see below), whose sum is σ = 2025722832. Its totient is φ = 576640080.

The previous prime is 1155418027. The next prime is 1155418031. The reversal of 1155418028 is 8208145511.

It is not an unprimeable number, because it can be changed into a prime (1155418021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264800 + ... + 269127.

It is an arithmetic number, because the mean of its divisors is an integer number (168810236).

Almost surely, 2^1155418028 is an apocalyptic number.

It is an amenable number.

1155418028 is a deficient number, since it is larger than the sum of its proper divisors (870304804).

1155418028 is a wasteful number, since it uses less digits than its factorization.

1155418028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534472 (or 534470 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 1155418028 is about 33991.4405108110. The cubic root of 1155418028 is about 1049.3323126251.

The spelling of 1155418028 in words is "one billion, one hundred fifty-five million, four hundred eighteen thousand, twenty-eight".