164130661 has 4 divisors (see below), whose sum is σ = 164710912. Its totient is φ = 163550412.

The previous prime is 164130611. The next prime is 164130671. The reversal of 164130661 is 166031461.

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 a cyclic number.

It is not a de Polignac number, because 164130661 - 2⁹ = 164130149 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 (164130611) 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, 289701 + ... + 290266.

It is an arithmetic number, because the mean of its divisors is an integer number (41177728).

Almost surely, 2^164130661 is an apocalyptic number.

It is an amenable number.

164130661 is a deficient number, since it is larger than the sum of its proper divisors (580251).

164130661 is an equidigital number, since it uses as much as digits as its factorization.

164130661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580250.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 164130661 is about 12811.3489141464. The cubic root of 164130661 is about 547.5156946635.

The spelling of 164130661 in words is "one hundred sixty-four million, one hundred thirty thousand, six hundred sixty-one".