328273639 has 2 divisors, whose sum is σ = 328273640. Its totient is φ = 328273638.

The previous prime is 328273619. The next prime is 328273643. The reversal of 328273639 is 936372823.

It is a strong prime.

It is an emirp because it is prime and its reverse (936372823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328273639 - 2¹⁷ = 328142567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 328273595 and 328273604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328273609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164136819 + 164136820.

It is an arithmetic number, because the mean of its divisors is an integer number (164136820).

Almost surely, 2^328273639 is an apocalyptic number.

328273639 is a deficient number, since it is larger than the sum of its proper divisors (1).

328273639 is an equidigital number, since it uses as much as digits as its factorization.

328273639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The square root of 328273639 is about 18118.3232943890. The cubic root of 328273639 is about 689.8351766221.

The spelling of 328273639 in words is "three hundred twenty-eight million, two hundred seventy-three thousand, six hundred thirty-nine".