1264262368 has 12 divisors (see below), whose sum is σ = 2489016600. Its totient is φ = 632131168.

The previous prime is 1264262357. The next prime is 1264262383. The reversal of 1264262368 is 8632624621.

It is a self number, because there is not a number n which added to its sum of digits gives 1264262368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19754068 + ... + 19754131.

It is an arithmetic number, because the mean of its divisors is an integer number (207418050).

Almost surely, 2^1264262368 is an apocalyptic number.

It is an amenable number.

1264262368 is a deficient number, since it is larger than the sum of its proper divisors (1224754232).

1264262368 is an equidigital number, since it uses as much as digits as its factorization.

1264262368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39508209 (or 39508201 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 1264262368 is about 35556.4673160875. The cubic root of 1264262368 is about 1081.2988397287.

Adding to 1264262368 its reverse (8632624621), we get a palindrome (9896886989).

The spelling of 1264262368 in words is "one billion, two hundred sixty-four million, two hundred sixty-two thousand, three hundred sixty-eight".