1263408983 has 8 divisors (see below), whose sum is σ = 1307411280. Its totient is φ = 1219435840.

The previous prime is 1263408961. The next prime is 1263409013. The reversal of 1263408983 is 3898043621.

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 1263408983 - 2²² = 1259214679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263408943) 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 7 ways as a sum of consecutive naturals, for example, 117128 + ... + 127458.

It is an arithmetic number, because the mean of its divisors is an integer number (163426410).

Almost surely, 2^1263408983 is an apocalyptic number.

1263408983 is a deficient number, since it is larger than the sum of its proper divisors (44002297).

1263408983 is a wasteful number, since it uses less digits than its factorization.

1263408983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14577.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 1263408983 is about 35544.4648714817. The cubic root of 1263408983 is about 1081.0554904748.

The spelling of 1263408983 in words is "one billion, two hundred sixty-three million, four hundred eight thousand, nine hundred eighty-three".