1263680748 has 36 divisors (see below), whose sum is σ = 3484696488. Its totient is φ = 382933440.

The previous prime is 1263680741. The next prime is 1263680777. The reversal of 1263680748 is 8470863621.

1263680748 is a `hidden beast` number, since 1 + 2 + 636 + 8 + 0 + 7 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1263680741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1595161 + ... + 1595952.

Almost surely, 2^1263680748 is an apocalyptic number.

1263680748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1263680748 is an abundant number, since it is smaller than the sum of its proper divisors (2221015740).

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

1263680748 is a wasteful number, since it uses less digits than its factorization.

1263680748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191134 (or 3191129 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 1263680748 is about 35548.2875536924. The cubic root of 1263680748 is about 1081.1329982299.

The spelling of 1263680748 in words is "one billion, two hundred sixty-three million, six hundred eighty thousand, seven hundred forty-eight".