1265479768 has 64 divisors (see below), whose sum is σ = 2824427520. Its totient is φ = 520128000.

The previous prime is 1265479759. The next prime is 1265479777. The reversal of 1265479768 is 8679745621.

It is an interprime number because it is at equal distance from previous prime (1265479759) and next prime (1265479777).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192943 + ... + 199393.

It is an arithmetic number, because the mean of its divisors is an integer number (44131680).

Almost surely, 2^1265479768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265479768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412213760).

1265479768 is an abundant number, since it is smaller than the sum of its proper divisors (1558947752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1265479768 is a wasteful number, since it uses less digits than its factorization.

1265479768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608 (or 6604 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The square root of 1265479768 is about 35573.5824454046. The cubic root of 1265479768 is about 1081.6458011771.

The spelling of 1265479768 in words is "one billion, two hundred sixty-five million, four hundred seventy-nine thousand, seven hundred sixty-eight".