1263476648 has 16 divisors (see below), whose sum is σ = 2707450080. Its totient is φ = 541489968.

The previous prime is 1263476647. The next prime is 1263476653. The reversal of 1263476648 is 8466743621.

It is not an unprimeable number, because it can be changed into a prime (1263476647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11280986 + ... + 11281097.

It is an arithmetic number, because the mean of its divisors is an integer number (169215630).

Almost surely, 2^1263476648 is an apocalyptic number.

It is an amenable number.

1263476648 is an abundant number, since it is smaller than the sum of its proper divisors (1443973432).

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

1263476648 is a wasteful number, since it uses less digits than its factorization.

1263476648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22562096 (or 22562092 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 47.

The square root of 1263476648 is about 35545.4166947020. The cubic root of 1263476648 is about 1081.0747896658.

The spelling of 1263476648 in words is "one billion, two hundred sixty-three million, four hundred seventy-six thousand, six hundred forty-eight".