1244253345 has 32 divisors (see below), whose sum is σ = 2023833600. Its totient is φ = 652639680.

The previous prime is 1244253343. The next prime is 1244253347. The reversal of 1244253345 is 5433524421.

It is an interprime number because it is at equal distance from previous prime (1244253343) and next prime (1244253347).

It is not a de Polignac number, because 1244253345 - 2¹ = 1244253343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1244253343) 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 31 ways as a sum of consecutive naturals, for example, 517456 + ... + 519854.

It is an arithmetic number, because the mean of its divisors is an integer number (63244800).

Almost surely, 2^1244253345 is an apocalyptic number.

1244253345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1244253345 is a deficient number, since it is larger than the sum of its proper divisors (779580255).

1244253345 is a wasteful number, since it uses less digits than its factorization.

1244253345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965.

The product of its digits is 57600, while the sum is 33.

The square root of 1244253345 is about 35273.9754635057. The cubic root of 1244253345 is about 1075.5640364387.

Adding to 1244253345 its reverse (5433524421), we get a palindrome (6677777766).

The spelling of 1244253345 in words is "one billion, two hundred forty-four million, two hundred fifty-three thousand, three hundred forty-five".