1145513544 has 128 divisors (see below), whose sum is σ = 3346237440. Its totient is φ = 320044032.

The previous prime is 1145513531. The next prime is 1145513609. The reversal of 1145513544 is 4453155411.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1575309 + ... + 1576035.

It is an arithmetic number, because the mean of its divisors is an integer number (26142480).

Almost surely, 2^1145513544 is an apocalyptic number.

1145513544 is a gapful number since it is divisible by the number (14) 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 1145513544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1673118720).

1145513544 is an abundant number, since it is smaller than the sum of its proper divisors (2200723896).

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

1145513544 is a wasteful number, since it uses less digits than its factorization.

1145513544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 935 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 1145513544 is about 33845.4360881936. The cubic root of 1145513544 is about 1046.3253390020.

Adding to 1145513544 its reverse (4453155411), we get a palindrome (5598668955).

The spelling of 1145513544 in words is "one billion, one hundred forty-five million, five hundred thirteen thousand, five hundred forty-four".