1263700368 has 240 divisors, whose sum is σ = 4288900096. Its totient is φ = 339655680.

The previous prime is 1263700367. The next prime is 1263700381. The reversal of 1263700368 is 8630073621.

It is a happy number.

1263700368 is a `hidden beast` number, since 12 + 637 + 0 + 0 + 3 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1263700367) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1155630 + ... + 1156722.

Almost surely, 2^1263700368 is an apocalyptic number.

1263700368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263700368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2144450048).

1263700368 is an abundant number, since it is smaller than the sum of its proper divisors (3025199728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263700368 is a wasteful number, since it uses less digits than its factorization.

1263700368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1263700368 is about 35548.5635152815. The cubic root of 1263700368 is about 1081.1385934511.

Adding to 1263700368 its reverse (8630073621), we get a palindrome (9893773989).

The spelling of 1263700368 in words is "one billion, two hundred sixty-three million, seven hundred thousand, three hundred sixty-eight".