1263888353 has 16 divisors (see below), whose sum is σ = 1609198080. Its totient is φ = 965514816.

The previous prime is 1263888343. The next prime is 1263888359. The reversal of 1263888353 is 3538883621.

It is not a de Polignac number, because 1263888353 - 2⁴ = 1263888337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1263888298 and 1263888307.

It is not an unprimeable number, because it can be changed into a prime (1263888359) 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 15 ways as a sum of consecutive naturals, for example, 236825 + ... + 242102.

It is an arithmetic number, because the mean of its divisors is an integer number (100574880).

Almost surely, 2^1263888353 is an apocalyptic number.

1263888353 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1263888353 is a deficient number, since it is larger than the sum of its proper divisors (345309727).

1263888353 is a wasteful number, since it uses less digits than its factorization.

1263888353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478976.

The product of its digits is 829440, while the sum is 47.

The square root of 1263888353 is about 35551.2074759775. The cubic root of 1263888353 is about 1081.1921999775.

The spelling of 1263888353 in words is "one billion, two hundred sixty-three million, eight hundred eighty-eight thousand, three hundred fifty-three".