1264878648 has 48 divisors (see below), whose sum is σ = 3737143800. Its totient is φ = 383296320.

The previous prime is 1264878623. The next prime is 1264878649. The reversal of 1264878648 is 8468784621.

It is a junction number, because it is equal to n+sod(n) for n = 1264878594 and 1264878603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264878649) 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, 797743 + ... + 799326.

Almost surely, 2^1264878648 is an apocalyptic number.

1264878648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1264878648 is an abundant number, since it is smaller than the sum of its proper divisors (2472265152).

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

1264878648 is a wasteful number, since it uses less digits than its factorization.

1264878648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597092 (or 1597085 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 54.

The square root of 1264878648 is about 35565.1324755019. The cubic root of 1264878648 is about 1081.4745085920.

The spelling of 1264878648 in words is "one billion, two hundred sixty-four million, eight hundred seventy-eight thousand, six hundred forty-eight".