1155120118 has 16 divisors (see below), whose sum is σ = 1749496320. Its totient is φ = 571971456.

The previous prime is 1155120103. The next prime is 1155120119. The reversal of 1155120118 is 8110215511.

It is a junction number, because it is equal to n+sod(n) for n = 1155120092 and 1155120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155120119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146788 + ... + 154456.

It is an arithmetic number, because the mean of its divisors is an integer number (109343520).

Almost surely, 2^1155120118 is an apocalyptic number.

1155120118 is a deficient number, since it is larger than the sum of its proper divisors (594376202).

1155120118 is a wasteful number, since it uses less digits than its factorization.

1155120118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8391.

The product of its (nonzero) digits is 400, while the sum is 25.

The square root of 1155120118 is about 33987.0580956928. The cubic root of 1155120118 is about 1049.2421191618.

Adding to 1155120118 its reverse (8110215511), we get a palindrome (9265335629).

The spelling of 1155120118 in words is "one billion, one hundred fifty-five million, one hundred twenty thousand, one hundred eighteen".