1297118952 has 24 divisors (see below), whose sum is σ = 3513030690. Its totient is φ = 432372960.

The previous prime is 1297118929. The next prime is 1297118959. The reversal of 1297118952 is 2598117921.

It can be written as a sum of positive squares in only one way, i.e., 1014677316 + 282441636 = 31854^2 + 16806^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 1297118898 and 1297118907.

It is not an unprimeable number, because it can be changed into a prime (1297118959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9007699 + ... + 9007842.

Almost surely, 2^1297118952 is an apocalyptic number.

1297118952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1297118952 is an abundant number, since it is smaller than the sum of its proper divisors (2215911738).

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

1297118952 is a wasteful number, since it uses less digits than its factorization.

1297118952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18015553 (or 18015546 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 1297118952 is about 36015.5376469656. The cubic root of 1297118952 is about 1090.5860417848.

The spelling of 1297118952 in words is "one billion, two hundred ninety-seven million, one hundred eighteen thousand, nine hundred fifty-two".