1265171016 has 32 divisors (see below), whose sum is σ = 3183883200. Its totient is φ = 418929600.

The previous prime is 1265170999. The next prime is 1265171029. The reversal of 1265171016 is 6101715621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170931 + ... + 178178.

It is an arithmetic number, because the mean of its divisors is an integer number (99496350).

Almost surely, 2^1265171016 is an apocalyptic number.

It is an amenable number.

1265171016 is an abundant number, since it is smaller than the sum of its proper divisors (1918712184).

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

1265171016 is a wasteful number, since it uses less digits than its factorization.

1265171016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349269 (or 349265 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1265171016 is about 35569.2425558937. The cubic root of 1265171016 is about 1081.5578273044.

Adding to 1265171016 its reverse (6101715621), we get a palindrome (7366886637).

The spelling of 1265171016 in words is "one billion, two hundred sixty-five million, one hundred seventy-one thousand, sixteen".