1263413345 has 24 divisors (see below), whose sum is σ = 1618759296. Its totient is φ = 946122848.

The previous prime is 1263413329. The next prime is 1263413357. The reversal of 1263413345 is 5433143621.

It is not a de Polignac number, because 1263413345 - 2⁴ = 1263413329 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 119234 + ... + 129396.

It is an arithmetic number, because the mean of its divisors is an integer number (67448304).

Almost surely, 2^1263413345 is an apocalyptic number.

It is an amenable number.

1263413345 is a deficient number, since it is larger than the sum of its proper divisors (355345951).

1263413345 is a wasteful number, since it uses less digits than its factorization.

1263413345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10261 (or 10238 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 1263413345 is about 35544.5262311935. The cubic root of 1263413345 is about 1081.0567346110.

Adding to 1263413345 its reverse (5433143621), we get a palindrome (6696556966).

The spelling of 1263413345 in words is "one billion, two hundred sixty-three million, four hundred thirteen thousand, three hundred forty-five".