329945138 has 4 divisors (see below), whose sum is σ = 494917710. Its totient is φ = 164972568.

The previous prime is 329945137. The next prime is 329945167. The reversal of 329945138 is 831549923.

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., 246898369 + 83046769 = 15713^2 + 9113^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (329945137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82486283 + ... + 82486286.

Almost surely, 2^329945138 is an apocalyptic number.

329945138 is a deficient number, since it is larger than the sum of its proper divisors (164972572).

329945138 is a wasteful number, since it uses less digits than its factorization.

329945138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164972571.

The product of its digits is 233280, while the sum is 44.

The square root of 329945138 is about 18164.3920349678. The cubic root of 329945138 is about 691.0040259657.

The spelling of 329945138 in words is "three hundred twenty-nine million, nine hundred forty-five thousand, one hundred thirty-eight".