1297191412 has 24 divisors (see below), whose sum is σ = 2477926080. Its totient is φ = 589282560.

The previous prime is 1297191403. The next prime is 1297191439. The reversal of 1297191412 is 2141917921.

It is a happy number.

It is a congruent number.

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, 75313 + ... + 90919.

It is an arithmetic number, because the mean of its divisors is an integer number (103246920).

Almost surely, 2^1297191412 is an apocalyptic number.

It is an amenable number.

1297191412 is a deficient number, since it is larger than the sum of its proper divisors (1180734668).

1297191412 is a wasteful number, since it uses less digits than its factorization.

1297191412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17511 (or 17509 counting only the distinct ones).

The product of its digits is 9072, while the sum is 37.

The square root of 1297191412 is about 36016.5435876348. The cubic root of 1297191412 is about 1090.6063489415.

It can be divided in two parts, 129719 and 1412, that added together give a palindrome (131131).

The spelling of 1297191412 in words is "one billion, two hundred ninety-seven million, one hundred ninety-one thousand, four hundred twelve".