1179640321 has 2 divisors, whose sum is σ = 1179640322. Its totient is φ = 1179640320.

The previous prime is 1179640313. The next prime is 1179640331. The reversal of 1179640321 is 1230469711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1127280625 + 52359696 = 33575^2 + 7236^2 .

It is a cyclic number.

It is not a de Polignac number, because 1179640321 - 2³ = 1179640313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1179640331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 589820160 + 589820161.

It is an arithmetic number, because the mean of its divisors is an integer number (589820161).

Almost surely, 2^1179640321 is an apocalyptic number.

It is an amenable number.

1179640321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1179640321 is an equidigital number, since it uses as much as digits as its factorization.

1179640321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1179640321 is about 34345.8923453737. The cubic root of 1179640321 is about 1056.6144269348.

The spelling of 1179640321 in words is "one billion, one hundred seventy-nine million, six hundred forty thousand, three hundred twenty-one".