1149513552 has 120 divisors (see below), whose sum is σ = 3626920640. Its totient is φ = 348321600.

The previous prime is 1149513529. The next prime is 1149513557. The reversal of 1149513552 is 2553159411.

It is a happy number.

1149513552 is a `hidden beast` number, since 1 + 1 + 4 + 95 + 13 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149513557) 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 23 ways as a sum of consecutive naturals, for example, 41277 + ... + 63267.

Almost surely, 2^1149513552 is an apocalyptic number.

1149513552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1149513552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1813460320).

1149513552 is an abundant number, since it is smaller than the sum of its proper divisors (2477407088).

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

1149513552 is a wasteful number, since it uses less digits than its factorization.

1149513552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22030 (or 22007 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 1149513552 is about 33904.4768725312. The cubic root of 1149513552 is about 1047.5418087182.

The spelling of 1149513552 in words is "one billion, one hundred forty-nine million, five hundred thirteen thousand, five hundred fifty-two".