1297166312 has 16 divisors (see below), whose sum is σ = 2619278340. Its totient is φ = 598692096.

The previous prime is 1297166287. The next prime is 1297166327. The reversal of 1297166312 is 2136617921.

It can be written as a sum of positive squares in 2 ways, for example, as 1204506436 + 92659876 = 34706^2 + 9626^2 .

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, 6236273 + ... + 6236480.

Almost surely, 2^1297166312 is an apocalyptic number.

It is an amenable number.

1297166312 is an abundant number, since it is smaller than the sum of its proper divisors (1322112028).

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

1297166312 is a wasteful number, since it uses less digits than its factorization.

1297166312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12472772 (or 12472768 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 1297166312 is about 36016.1951349667. The cubic root of 1297166312 is about 1090.5993146684.

The spelling of 1297166312 in words is "one billion, two hundred ninety-seven million, one hundred sixty-six thousand, three hundred twelve".