1263085249 has 8 divisors (see below), whose sum is σ = 1329912000. Its totient is φ = 1196293392.

The previous prime is 1263085247. The next prime is 1263085277. The reversal of 1263085249 is 9425803621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1263085249 - 2¹ = 1263085247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1263085247) 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, 101247 + ... + 113035.

It is an arithmetic number, because the mean of its divisors is an integer number (166239000).

Almost surely, 2^1263085249 is an apocalyptic number.

1263085249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1263085249 is a deficient number, since it is larger than the sum of its proper divisors (66826751).

1263085249 is a wasteful number, since it uses less digits than its factorization.

1263085249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17447.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 1263085249 is about 35539.9106498595. The cubic root of 1263085249 is about 1080.9631465810.

It can be divided in two parts, 12630 and 85249, that added together give a palindrome (97879).

The spelling of 1263085249 in words is "one billion, two hundred sixty-three million, eighty-five thousand, two hundred forty-nine".