1263968418 has 16 divisors (see below), whose sum is σ = 2589594336. Its totient is φ = 411046560.

The previous prime is 1263968413. The next prime is 1263968429. The reversal of 1263968418 is 8148693621.

It is not an unprimeable number, because it can be changed into a prime (1263968413) 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 7 ways as a sum of consecutive naturals, for example, 2568796 + ... + 2569287.

It is an arithmetic number, because the mean of its divisors is an integer number (161849646).

Almost surely, 2^1263968418 is an apocalyptic number.

1263968418 is an abundant number, since it is smaller than the sum of its proper divisors (1325625918).

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

1263968418 is a wasteful number, since it uses less digits than its factorization.

1263968418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138129.

The product of its digits is 497664, while the sum is 48.

The square root of 1263968418 is about 35552.3335099118. Note that the first 3 decimals coincide. The cubic root of 1263968418 is about 1081.2150300071.

The spelling of 1263968418 in words is "one billion, two hundred sixty-three million, nine hundred sixty-eight thousand, four hundred eighteen".