329890161 has 4 divisors (see below), whose sum is σ = 439853552. Its totient is φ = 219926772.

The previous prime is 329890147. The next prime is 329890177. The reversal of 329890161 is 161098923.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 329890161 - 2⁶ = 329890097 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (329892161) 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, 54981691 + ... + 54981696.

It is an arithmetic number, because the mean of its divisors is an integer number (109963388).

Almost surely, 2^329890161 is an apocalyptic number.

It is an amenable number.

329890161 is a deficient number, since it is larger than the sum of its proper divisors (109963391).

329890161 is a wasteful number, since it uses less digits than its factorization.

329890161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109963390.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 329890161 is about 18162.8786540020. The cubic root of 329890161 is about 690.9656443944.

The spelling of 329890161 in words is "three hundred twenty-nine million, eight hundred ninety thousand, one hundred sixty-one".