1265683063 has 8 divisors (see below), whose sum is σ = 1279642448. Its totient is φ = 1251742464.

The previous prime is 1265683049. The next prime is 1265683091. The reversal of 1265683063 is 3603865621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1265683063 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 (1265687063) 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, 163345 + ... + 170917.

It is an arithmetic number, because the mean of its divisors is an integer number (159955306).

Almost surely, 2^1265683063 is an apocalyptic number.

1265683063 is a deficient number, since it is larger than the sum of its proper divisors (13959385).

1265683063 is an equidigital number, since it uses as much as digits as its factorization.

1265683063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9393.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 1265683063 is about 35576.4397178807. The cubic root of 1265683063 is about 1081.7037189762.

The spelling of 1265683063 in words is "one billion, two hundred sixty-five million, six hundred eighty-three thousand, sixty-three".