1265167916 has 12 divisors (see below), whose sum is σ = 2251570440. Its totient is φ = 621862080.

The previous prime is 1265167909. The next prime is 1265167933. The reversal of 1265167916 is 6197615621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2680205 + ... + 2680676.

It is an arithmetic number, because the mean of its divisors is an integer number (187630870).

Almost surely, 2^1265167916 is an apocalyptic number.

It is an amenable number.

1265167916 is a deficient number, since it is larger than the sum of its proper divisors (986402524).

1265167916 is a wasteful number, since it uses less digits than its factorization.

1265167916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5360944 (or 5360942 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 1265167916 is about 35569.1989788918. The cubic root of 1265167916 is about 1081.5569439371.

The spelling of 1265167916 in words is "one billion, two hundred sixty-five million, one hundred sixty-seven thousand, nine hundred sixteen".