164121085 has 8 divisors (see below), whose sum is σ = 202268376. Its totient is φ = 127748160.

The previous prime is 164121047. The next prime is 164121103. The reversal of 164121085 is 580121461.

It can be written as a sum of positive squares in 4 ways, for example, as 13003236 + 151117849 = 3606^2 + 12293^2 .

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

It is not a de Polignac number, because 164121085 - 2⁹ = 164120573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443386 + ... + 443755.

It is an arithmetic number, because the mean of its divisors is an integer number (25283547).

Almost surely, 2^164121085 is an apocalyptic number.

It is an amenable number.

164121085 is a deficient number, since it is larger than the sum of its proper divisors (38147291).

164121085 is an equidigital number, since it uses as much as digits as its factorization.

164121085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887183.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 164121085 is about 12810.9751775577. The cubic root of 164121085 is about 547.5050464148.

The spelling of 164121085 in words is "one hundred sixty-four million, one hundred twenty-one thousand, eighty-five".