1154155112 has 48 divisors (see below), whose sum is σ = 2411388420. Its totient is φ = 517397760.

The previous prime is 1154155099. The next prime is 1154155117. The reversal of 1154155112 is 2115514511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1099187716 + 54967396 = 33154^2 + 7414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154155117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62498 + ... + 78830.

Almost surely, 2^1154155112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1154155112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1205694210).

1154155112 is an abundant number, since it is smaller than the sum of its proper divisors (1257233308).

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

1154155112 is a wasteful number, since it uses less digits than its factorization.

1154155112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16434 (or 16419 counting only the distinct ones).

The product of its digits is 1000, while the sum is 26.

The square root of 1154155112 is about 33972.8584608361. The cubic root of 1154155112 is about 1048.9498531555.

Adding to 1154155112 its reverse (2115514511), we get a palindrome (3269669623).

The spelling of 1154155112 in words is "one billion, one hundred fifty-four million, one hundred fifty-five thousand, one hundred twelve".