328330138 has 4 divisors (see below), whose sum is σ = 492495210. Its totient is φ = 164165068.

The previous prime is 328330133. The next prime is 328330151. The reversal of 328330138 is 831033823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 243266409 + 85063729 = 15597^2 + 9223^2 .

It is not an unprimeable number, because it can be changed into a prime (328330133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82082533 + ... + 82082536.

Almost surely, 2^328330138 is an apocalyptic number.

328330138 is a deficient number, since it is larger than the sum of its proper divisors (164165072).

328330138 is a wasteful number, since it uses less digits than its factorization.

328330138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164165071.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 328330138 is about 18119.8823947618. The cubic root of 328330138 is about 689.8747500726.

The spelling of 328330138 in words is "three hundred twenty-eight million, three hundred thirty thousand, one hundred thirty-eight".