1297630968 has 32 divisors (see below), whose sum is σ = 3247084800. Its totient is φ = 432142688.

The previous prime is 1297630967. The next prime is 1297630987. The reversal of 1297630968 is 8690367921.

It is a super-2 number, since 2×1297630968² = 3367692258225234048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1297630968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297630967) 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, 1963 + ... + 50981.

It is an arithmetic number, because the mean of its divisors is an integer number (101471400).

Almost surely, 2^1297630968 is an apocalyptic number.

It is an amenable number.

1297630968 is an abundant number, since it is smaller than the sum of its proper divisors (1949453832).

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

1297630968 is a wasteful number, since it uses less digits than its factorization.

1297630968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50131 (or 50127 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 1297630968 is about 36022.6452110336. The cubic root of 1297630968 is about 1090.7295197713.

The spelling of 1297630968 in words is "one billion, two hundred ninety-seven million, six hundred thirty thousand, nine hundred sixty-eight".