1244103645 has 16 divisors (see below), whose sum is σ = 1991005632. Its totient is φ = 663375360.

The previous prime is 1244103607. The next prime is 1244103689. The reversal of 1244103645 is 5463014421.

1244103645 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1244103645 - 2¹⁰ = 1244102621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117334 + ... + 127496.

It is an arithmetic number, because the mean of its divisors is an integer number (124437852).

Almost surely, 2^1244103645 is an apocalyptic number.

1244103645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1244103645 is a deficient number, since it is larger than the sum of its proper divisors (746901987).

1244103645 is a wasteful number, since it uses less digits than its factorization.

1244103645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18332.

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

The square root of 1244103645 is about 35271.8534386839. The cubic root of 1244103645 is about 1075.5208998876.

The spelling of 1244103645 in words is "one billion, two hundred forty-four million, one hundred three thousand, six hundred forty-five".