1263202216 has 8 divisors (see below), whose sum is σ = 2368504170. Its totient is φ = 631601104.

The previous prime is 1263202207. The next prime is 1263202217. The reversal of 1263202216 is 6122023621.

It can be written as a sum of positive squares in only one way, i.e., 836944900 + 426257316 = 28930^2 + 20646^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1263202217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78950131 + ... + 78950146.

Almost surely, 2^1263202216 is an apocalyptic number.

It is an amenable number.

1263202216 is a deficient number, since it is larger than the sum of its proper divisors (1105301954).

1263202216 is a wasteful number, since it uses less digits than its factorization.

1263202216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157900283 (or 157900279 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1263202216 is about 35541.5561842753. The cubic root of 1263202216 is about 1080.9965127938.

Adding to 1263202216 its reverse (6122023621), we get a palindrome (7385225837).

The spelling of 1263202216 in words is "one billion, two hundred sixty-three million, two hundred two thousand, two hundred sixteen".