1297949168 has 40 divisors (see below), whose sum is σ = 2600297856. Its totient is φ = 626976000.

The previous prime is 1297949161. The next prime is 1297949183. The reversal of 1297949168 is 8619497921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297949161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345830 + ... + 349562.

Almost surely, 2^1297949168 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 1297949168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300148928).

1297949168 is an abundant number, since it is smaller than the sum of its proper divisors (1302348688).

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

1297949168 is a wasteful number, since it uses less digits than its factorization.

1297949168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473 (or 4467 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 56.

The square root of 1297949168 is about 36027.0616065202. The cubic root of 1297949168 is about 1090.8186672964.

The spelling of 1297949168 in words is "one billion, two hundred ninety-seven million, nine hundred forty-nine thousand, one hundred sixty-eight".