161020829 has 8 divisors (see below), whose sum is σ = 163684800. Its totient is φ = 158368000.

The previous prime is 161020807. The next prime is 161020859. The reversal of 161020829 is 928020161.

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

It is a cyclic number.

It is not a de Polignac number, because 161020829 - 2¹² = 161016733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161020859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29354 + ... + 34404.

It is an arithmetic number, because the mean of its divisors is an integer number (20460600).

Almost surely, 2^161020829 is an apocalyptic number.

It is an amenable number.

161020829 is a deficient number, since it is larger than the sum of its proper divisors (2663971).

161020829 is an equidigital number, since it uses as much as digits as its factorization.

161020829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 161020829 is about 12689.3982914873. The cubic root of 161020829 is about 544.0356416329.

The spelling of 161020829 in words is "one hundred sixty-one million, twenty thousand, eight hundred twenty-nine".