1151133444 has 60 divisors (see below), whose sum is σ = 3186322524. Its totient is φ = 361138176.

The previous prime is 1151133433. The next prime is 1151133469. The reversal of 1151133444 is 4443311511.

It can be written as a sum of positive squares in 2 ways, for example, as 1068505344 + 82628100 = 32688^2 + 9090^2 .

It is a super-2 number, since 2×1151133444² = 2650216411790602272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 98989 + ... + 110004.

Almost surely, 2^1151133444 is an apocalyptic number.

It is an amenable number.

1151133444 is an abundant number, since it is smaller than the sum of its proper divisors (2035189080).

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

1151133444 is a wasteful number, since it uses less digits than its factorization.

1151133444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209026 (or 209015 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1151133444 is about 33928.3575199272. The cubic root of 1151133444 is about 1048.0336423072.

Adding to 1151133444 its reverse (4443311511), we get a palindrome (5594444955).

The spelling of 1151133444 in words is "one billion, one hundred fifty-one million, one hundred thirty-three thousand, four hundred forty-four".