164537089 has 2 divisors, whose sum is σ = 164537090. Its totient is φ = 164537088.

The previous prime is 164537071. The next prime is 164537189. The reversal of 164537089 is 980735461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105370225 + 59166864 = 10265^2 + 7692^2 .

It is a cyclic number.

It is not a de Polignac number, because 164537089 - 2⁹ = 164536577 is a prime.

It is not a weakly prime, because it can be changed into another prime (164537029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82268544 + 82268545.

It is an arithmetic number, because the mean of its divisors is an integer number (82268545).

Almost surely, 2^164537089 is an apocalyptic number.

It is an amenable number.

164537089 is a deficient number, since it is larger than the sum of its proper divisors (1).

164537089 is an equidigital number, since it uses as much as digits as its factorization.

164537089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 164537089 is about 12827.2011366471. The cubic root of 164537089 is about 547.9672501163.

The spelling of 164537089 in words is "one hundred sixty-four million, five hundred thirty-seven thousand, eighty-nine".