1244204533 has 12 divisors (see below), whose sum is σ = 1469756448. Its totient is φ = 1044086160.

The previous prime is 1244204519. The next prime is 1244204543. The reversal of 1244204533 is 3354024421.

It is a happy number.

It is not a de Polignac number, because 1244204533 - 2¹³ = 1244196341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244204503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332785 + ... + 336502.

It is an arithmetic number, because the mean of its divisors is an integer number (122479704).

Almost surely, 2^1244204533 is an apocalyptic number.

1244204533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1244204533 is a deficient number, since it is larger than the sum of its proper divisors (225551915).

1244204533 is a wasteful number, since it uses less digits than its factorization.

1244204533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669324 (or 669311 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 1244204533 is about 35273.2835585234. The cubic root of 1244204533 is about 1075.5499714793.

Adding to 1244204533 its reverse (3354024421), we get a palindrome (4598228954).

The spelling of 1244204533 in words is "one billion, two hundred forty-four million, two hundred four thousand, five hundred thirty-three".