329138918 has 8 divisors (see below), whose sum is σ = 493787448. Its totient is φ = 164543104.

The previous prime is 329138917. The next prime is 329138923. The reversal of 329138918 is 819831923.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329138911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12230 + ... + 28422.

It is an arithmetic number, because the mean of its divisors is an integer number (61723431).

Almost surely, 2^329138918 is an apocalyptic number.

329138918 is a deficient number, since it is larger than the sum of its proper divisors (164648530).

329138918 is a wasteful number, since it uses less digits than its factorization.

329138918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26358.

The product of its digits is 93312, while the sum is 44.

The square root of 329138918 is about 18142.1861416975. The cubic root of 329138918 is about 690.4407448047.

The spelling of 329138918 in words is "three hundred twenty-nine million, one hundred thirty-eight thousand, nine hundred eighteen".