328733161 has 3 divisors (see below), whose sum is σ = 328751293. Its totient is φ = 328715030.

The previous prime is 328733143. The next prime is 328733179. The reversal of 328733161 is 161337823.

The square root of 328733161 is 18131.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 161337823 = 449 ⋅359327.

It is an interprime number because it is at equal distance from previous prime (328733143) and next prime (328733179).

It is not a de Polignac number, because 328733161 - 2⁷ = 328733033 is a prime.

It is a super-2 number, since 2×328733161² = 216130982282103842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328733101) 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 in 2 ways as a sum of consecutive naturals, for example, 9066 + ... + 27196.

Almost surely, 2^328733161 is an apocalyptic number.

328733161 is the 18131-st square number.

328733161 is the 9066-th centered octagonal number.

It is an amenable number.

328733161 is a deficient number, since it is larger than the sum of its proper divisors (18132).

328733161 is an frugal number, since it uses more digits than its factorization.

328733161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36262 (or 18131 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The cubic root of 328733161 is about 690.1569068356.

The spelling of 328733161 in words is "three hundred twenty-eight million, seven hundred thirty-three thousand, one hundred sixty-one".