1145541445 has 12 divisors (see below), whose sum is σ = 1450809900. Its totient is φ = 868198464.

The previous prime is 1145541437. The next prime is 1145541479. The reversal of 1145541445 is 5441455411.

It can be written as a sum of positive squares in 2 ways, for example, as 219069601 + 926471844 = 14801^2 + 30438^2 .

It is not a de Polignac number, because 1145541445 - 2³ = 1145541437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145541445.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 315520 + ... + 319129.

It is an arithmetic number, because the mean of its divisors is an integer number (120900825).

Almost surely, 2^1145541445 is an apocalyptic number.

It is an amenable number.

1145541445 is a deficient number, since it is larger than the sum of its proper divisors (305268455).

1145541445 is an equidigital number, since it uses as much as digits as its factorization.

1145541445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634692 (or 634673 counting only the distinct ones).

The product of its digits is 32000, while the sum is 34.

The square root of 1145541445 is about 33845.8482682884. The cubic root of 1145541445 is about 1046.3338339652. Note that the first 3 decimals are identical.

Adding to 1145541445 its reverse (5441455411), we get a palindrome (6586996856).

It can be divided in two parts, 11455 and 41445, that added together give a square (52900 = 230²).

The spelling of 1145541445 in words is "one billion, one hundred forty-five million, five hundred forty-one thousand, four hundred forty-five".