1297329830 has 8 divisors (see below), whose sum is σ = 2335193712. Its totient is φ = 518931928.

The previous prime is 1297329829. The next prime is 1297329833. The reversal of 1297329830 is 389237921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297329833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64866482 + ... + 64866501.

It is an arithmetic number, because the mean of its divisors is an integer number (291899214).

Almost surely, 2^1297329830 is an apocalyptic number.

1297329830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1297329830 is a deficient number, since it is larger than the sum of its proper divisors (1037863882).

1297329830 is a wasteful number, since it uses less digits than its factorization.

1297329830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129732990.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1297329830 is about 36018.4651255436. The cubic root of 1297329830 is about 1090.6451389455.

The spelling of 1297329830 in words is "one billion, two hundred ninety-seven million, three hundred twenty-nine thousand, eight hundred thirty".