1121444603 has 4 divisors (see below), whose sum is σ = 1170203088. Its totient is φ = 1072686120.

The previous prime is 1121444573. The next prime is 1121444609. The reversal of 1121444603 is 3064441211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121444603 - 2²⁶ = 1054335739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121444609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24379208 + ... + 24379253.

It is an arithmetic number, because the mean of its divisors is an integer number (292550772).

Almost surely, 2^1121444603 is an apocalyptic number.

1121444603 is a deficient number, since it is larger than the sum of its proper divisors (48758485).

1121444603 is an equidigital number, since it uses as much as digits as its factorization.

1121444603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48758484.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1121444603 is about 33487.9769917503. The cubic root of 1121444603 is about 1038.9451221462.

Adding to 1121444603 its reverse (3064441211), we get a palindrome (4185885814).

The spelling of 1121444603 in words is "one billion, one hundred twenty-one million, four hundred forty-four thousand, six hundred three".