1244145603 has 16 divisors (see below), whose sum is σ = 1679014656. Its totient is φ = 819396960.

The previous prime is 1244145583. The next prime is 1244145607. The reversal of 1244145603 is 3065414421.

It is not a de Polignac number, because 1244145603 - 2⁸ = 1244145347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244145607) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 114538 + ... + 124928.

It is an arithmetic number, because the mean of its divisors is an integer number (104938416).

Almost surely, 2^1244145603 is an apocalyptic number.

1244145603 is a deficient number, since it is larger than the sum of its proper divisors (434869053).

1244145603 is a wasteful number, since it uses less digits than its factorization.

1244145603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10874.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1244145603 is about 35272.4482138680. The cubic root of 1244145603 is about 1075.5329905733.

The spelling of 1244145603 in words is "one billion, two hundred forty-four million, one hundred forty-five thousand, six hundred three".