1265163083 has 2 divisors, whose sum is σ = 1265163084. Its totient is φ = 1265163082.

The previous prime is 1265163059. The next prime is 1265163149. The reversal of 1265163083 is 3803615621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1265163083 - 2³⁰ = 191421259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1265163043) 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 as a sum of consecutive naturals, namely, 632581541 + 632581542.

It is an arithmetic number, because the mean of its divisors is an integer number (632581542).

Almost surely, 2^1265163083 is an apocalyptic number.

1265163083 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265163083 is an equidigital number, since it uses as much as digits as its factorization.

1265163083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 1265163083 is about 35569.1310408337. The cubic root of 1265163083 is about 1081.5555667362. Note that the first 4 decimals are identical.

The spelling of 1265163083 in words is "one billion, two hundred sixty-five million, one hundred sixty-three thousand, eighty-three".