1263878760 has 64 divisors (see below), whose sum is σ = 3794014080. Its totient is φ = 336823040.

The previous prime is 1263878713. The next prime is 1263878761. The reversal of 1263878760 is 678783621.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1263878761) 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, 321205 + ... + 325115.

It is an arithmetic number, because the mean of its divisors is an integer number (59281470).

Almost surely, 2^1263878760 is an apocalyptic number.

1263878760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263878760 is an abundant number, since it is smaller than the sum of its proper divisors (2530135320).

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

1263878760 is a wasteful number, since it uses less digits than its factorization.

1263878760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6618 (or 6614 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 1263878760 is about 35551.0725576599. The cubic root of 1263878760 is about 1081.1894645294.

The spelling of 1263878760 in words is "one billion, two hundred sixty-three million, eight hundred seventy-eight thousand, seven hundred sixty".