1263172244 has 24 divisors (see below), whose sum is σ = 2225181000. Its totient is φ = 627419520.

The previous prime is 1263172243. The next prime is 1263172247. The reversal of 1263172244 is 4422713621.

It can be written as a sum of positive squares in 4 ways, for example, as 718883344 + 544288900 = 26812^2 + 23330^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1263172244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263172243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494282 + ... + 496830.

It is an arithmetic number, because the mean of its divisors is an integer number (92715875).

Almost surely, 2^1263172244 is an apocalyptic number.

It is an amenable number.

1263172244 is a deficient number, since it is larger than the sum of its proper divisors (962008756).

1263172244 is a wasteful number, since it uses less digits than its factorization.

1263172244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323 (or 3321 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 1263172244 is about 35541.1345345080. The cubic root of 1263172244 is about 1080.9879631245.

Adding to 1263172244 its reverse (4422713621), we get a palindrome (5685885865).

The spelling of 1263172244 in words is "one billion, two hundred sixty-three million, one hundred seventy-two thousand, two hundred forty-four".