1153135044 has 36 divisors (see below), whose sum is σ = 2993652844. Its totient is φ = 373989312.

The previous prime is 1153135043. The next prime is 1153135051. The reversal of 1153135044 is 4405313511.

It is a happy number.

1153135044 is a `hidden beast` number, since 1 + 153 + 1 + 3 + 504 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 428986944 + 724148100 = 20712^2 + 26910^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 1153134999 and 1153135017.

It is not an unprimeable number, because it can be changed into a prime (1153135043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431527 + ... + 434190.

Almost surely, 2^1153135044 is an apocalyptic number.

It is an amenable number.

1153135044 is an abundant number, since it is smaller than the sum of its proper divisors (1840517800).

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

1153135044 is a wasteful number, since it uses less digits than its factorization.

1153135044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865764 (or 865759 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1153135044 is about 33957.8421575930. The cubic root of 1153135044 is about 1048.6407336525.

Adding to 1153135044 its reverse (4405313511), we get a palindrome (5558448555).

The spelling of 1153135044 in words is "one billion, one hundred fifty-three million, one hundred thirty-five thousand, forty-four".