1151121044 has 6 divisors (see below), whose sum is σ = 2014461834. Its totient is φ = 575560520.

The previous prime is 1151121029. The next prime is 1151121071. The reversal of 1151121044 is 4401211511.

It can be written as a sum of positive squares in only one way, i.e., 840304144 + 310816900 = 28988^2 + 17630^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143890127 + ... + 143890134.

It is an arithmetic number, because the mean of its divisors is an integer number (335743639).

Almost surely, 2^1151121044 is an apocalyptic number.

It is an amenable number.

1151121044 is a deficient number, since it is larger than the sum of its proper divisors (863340790).

1151121044 is a wasteful number, since it uses less digits than its factorization.

1151121044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287780265 (or 287780263 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1151121044 is about 33928.1747814409. The cubic root of 1151121044 is about 1048.0298791571.

Adding to 1151121044 its reverse (4401211511), we get a palindrome (5552332555).

The spelling of 1151121044 in words is "one billion, one hundred fifty-one million, one hundred twenty-one thousand, forty-four".