1265468863 has 16 divisors (see below), whose sum is σ = 1304994240. Its totient is φ = 1226624256.

The previous prime is 1265468861. The next prime is 1265468873. The reversal of 1265468863 is 3688645621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1265468863 - 2¹ = 1265468861 is a prime.

It is a super-2 number, since 2×1265468863² = 3202822886445025538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265468861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2882398 + ... + 2882836.

It is an arithmetic number, because the mean of its divisors is an integer number (81562140).

Almost surely, 2^1265468863 is an apocalyptic number.

1265468863 is a deficient number, since it is larger than the sum of its proper divisors (39525377).

1265468863 is a wasteful number, since it uses less digits than its factorization.

1265468863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 1658880, while the sum is 49.

The square root of 1265468863 is about 35573.4291712227. The cubic root of 1265468863 is about 1081.6426942180.

The spelling of 1265468863 in words is "one billion, two hundred sixty-five million, four hundred sixty-eight thousand, eight hundred sixty-three".