1145513444 has 12 divisors (see below), whose sum is σ = 2019281964. Its totient is φ = 568575744.

The previous prime is 1145513429. The next prime is 1145513471. The reversal of 1145513444 is 4443155411.

It can be written as a sum of positive squares in 2 ways, for example, as 899400100 + 246113344 = 29990^2 + 15688^2 .

It is a super-3 number, since 3×1145513444³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1145513444.

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 3 ways as a sum of consecutive naturals, for example, 1044629 + ... + 1045724.

It is an arithmetic number, because the mean of its divisors is an integer number (168273497).

Almost surely, 2^1145513444 is an apocalyptic number.

It is an amenable number.

1145513444 is a deficient number, since it is larger than the sum of its proper divisors (873768520).

1145513444 is a wasteful number, since it uses less digits than its factorization.

1145513444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090494 (or 2090492 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 1145513444 is about 33845.4346108895. The cubic root of 1145513444 is about 1046.3253085549.

Adding to 1145513444 its reverse (4443155411), we get a palindrome (5588668855).

The spelling of 1145513444 in words is "one billion, one hundred forty-five million, five hundred thirteen thousand, four hundred forty-four".