329813138 has 8 divisors (see below), whose sum is σ = 496188732. Its totient is φ = 164416896.

The previous prime is 329813137. The next prime is 329813149. The reversal of 329813138 is 831318923.

It can be written as a sum of positive squares in 2 ways, for example, as 326416489 + 3396649 = 18067^2 + 1843^2 .

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

It is not an unprimeable number, because it can be changed into a prime (329813137) 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, 243995 + ... + 245342.

Almost surely, 2^329813138 is an apocalyptic number.

329813138 is a deficient number, since it is larger than the sum of its proper divisors (166375594).

329813138 is a wasteful number, since it uses less digits than its factorization.

329813138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489676.

The product of its digits is 31104, while the sum is 38.

The square root of 329813138 is about 18160.7581890184. The cubic root of 329813138 is about 690.9118644846.

The spelling of 329813138 in words is "three hundred twenty-nine million, eight hundred thirteen thousand, one hundred thirty-eight".