1263545355 has 16 divisors (see below), whose sum is σ = 2047265280. Its totient is φ = 665359968.

The previous prime is 1263545329. The next prime is 1263545389. The reversal of 1263545355 is 5535453621.

It is not a de Polignac number, because 1263545355 - 2⁸ = 1263545099 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531957 + ... + 534326.

It is an arithmetic number, because the mean of its divisors is an integer number (127954080).

Almost surely, 2^1263545355 is an apocalyptic number.

1263545355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1263545355 is a deficient number, since it is larger than the sum of its proper divisors (783719925).

1263545355 is a wasteful number, since it uses less digits than its factorization.

1263545355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066370.

The product of its digits is 270000, while the sum is 39.

The square root of 1263545355 is about 35546.3831493445. The cubic root of 1263545355 is about 1081.0943853476.

Adding to 1263545355 its reverse (5535453621), we get a palindrome (6798998976).

The spelling of 1263545355 in words is "one billion, two hundred sixty-three million, five hundred forty-five thousand, three hundred fifty-five".