1263340226 has 32 divisors (see below), whose sum is σ = 1954653120. Its totient is φ = 612215296.

The previous prime is 1263340223. The next prime is 1263340237. The reversal of 1263340226 is 6220433621.

It is not an unprimeable number, because it can be changed into a prime (1263340223) 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 15 ways as a sum of consecutive naturals, for example, 2151905 + ... + 2152491.

It is an arithmetic number, because the mean of its divisors is an integer number (61082910).

Almost surely, 2^1263340226 is an apocalyptic number.

1263340226 is a deficient number, since it is larger than the sum of its proper divisors (691312894).

1263340226 is a wasteful number, since it uses less digits than its factorization.

1263340226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 1263340226 is about 35543.4976613163. The cubic root of 1263340226 is about 1081.0358791212.

Adding to 1263340226 its reverse (6220433621), we get a palindrome (7483773847).

The spelling of 1263340226 in words is "one billion, two hundred sixty-three million, three hundred forty thousand, two hundred twenty-six".