1103443945 has 24 divisors (see below), whose sum is σ = 1359700992. Its totient is φ = 859602240.

The previous prime is 1103443931. The next prime is 1103443949. The reversal of 1103443945 is 5493443011.

It is not a de Polignac number, because 1103443945 - 2⁹ = 1103443433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1103443945.

It is not an unprimeable number, because it can be changed into a prime (1103443949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2362602 + ... + 2363068.

It is an arithmetic number, because the mean of its divisors is an integer number (56654208).

Almost surely, 2^1103443945 is an apocalyptic number.

It is an amenable number.

1103443945 is a deficient number, since it is larger than the sum of its proper divisors (256257047).

1103443945 is an equidigital number, since it uses as much as digits as its factorization.

1103443945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1103443945 is about 33218.1267533255. The cubic root of 1103443945 is about 1033.3563009694.

Adding to 1103443945 its reverse (5493443011), we get a palindrome (6596886956).

The spelling of 1103443945 in words is "one billion, one hundred three million, four hundred forty-three thousand, nine hundred forty-five".