1968179321 has 2 divisors, whose sum is σ = 1968179322. Its totient is φ = 1968179320.

The previous prime is 1968179303. The next prime is 1968179333. The reversal of 1968179321 is 1239718691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1645438096 + 322741225 = 40564^2 + 17965^2 .

It is a cyclic number.

It is not a de Polignac number, because 1968179321 - 2¹⁰ = 1968178297 is a prime.

It is a super-2 number, since 2×1968179321² = 7747459679224042082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1968179341) 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, 984089660 + 984089661.

It is an arithmetic number, because the mean of its divisors is an integer number (984089661).

Almost surely, 2^1968179321 is an apocalyptic number.

It is an amenable number.

1968179321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968179321 is an equidigital number, since it uses as much as digits as its factorization.

1968179321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 47.

The square root of 1968179321 is about 44364.1670833568. The cubic root of 1968179321 is about 1253.2033721926.

The spelling of 1968179321 in words is "one billion, nine hundred sixty-eight million, one hundred seventy-nine thousand, three hundred twenty-one".