1297056632 has 8 divisors (see below), whose sum is σ = 2431981200. Its totient is φ = 648528312.

The previous prime is 1297056623. The next prime is 1297056643. The reversal of 1297056632 is 2366507921.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1297056632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81066032 + ... + 81066047.

It is an arithmetic number, because the mean of its divisors is an integer number (303997650).

Almost surely, 2^1297056632 is an apocalyptic number.

It is an amenable number.

1297056632 is a deficient number, since it is larger than the sum of its proper divisors (1134924568).

1297056632 is a wasteful number, since it uses less digits than its factorization.

1297056632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162132085 (or 162132081 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 1297056632 is about 36014.6724544317. The cubic root of 1297056632 is about 1090.5685757921.

The spelling of 1297056632 in words is "one billion, two hundred ninety-seven million, fifty-six thousand, six hundred thirty-two".