1297455768 has 48 divisors (see below), whose sum is σ = 4015936080. Its totient is φ = 370701504.

The previous prime is 1297455767. The next prime is 1297455769. The reversal of 1297455768 is 8675547921.

1297455768 is a `hidden beast` number, since 1 + 29 + 7 + 4 + 557 + 68 = 666.

It is an interprime number because it is at equal distance from previous prime (1297455767) and next prime (1297455769).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297455767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1286655 + ... + 1287662.

It is an arithmetic number, because the mean of its divisors is an integer number (83665335).

Almost surely, 2^1297455768 is an apocalyptic number.

1297455768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1297455768 is an abundant number, since it is smaller than the sum of its proper divisors (2718480312).

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

1297455768 is a wasteful number, since it uses less digits than its factorization.

1297455768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574336 (or 2574329 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The square root of 1297455768 is about 36020.2133252983. The cubic root of 1297455768 is about 1090.6804291804.

The spelling of 1297455768 in words is "one billion, two hundred ninety-seven million, four hundred fifty-five thousand, seven hundred sixty-eight".