164862797089 has 27 divisors (see below), whose sum is σ = 172743058803. Its totient is φ = 157339411632.

The previous prime is 164862797083. The next prime is 164862797129. The reversal of 164862797089 is 980797268461.

The square root of 164862797089 is 406033.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 118849115025 + 46013682064 = 344745^2 + 214508^2 .

It is not a de Polignac number, because 164862797089 - 2⁹ = 164862796577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164862797083) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1011428122 + ... + 1011428284.

Almost surely, 2^164862797089 is an apocalyptic number.

164862797089 is the 406033-rd square number.

164862797089 is the 203017-th centered octagonal number.

It is an amenable number.

164862797089 is a deficient number, since it is larger than the sum of its proper divisors (7880261714).

164862797089 is an frugal number, since it uses more digits than its factorization.

164862797089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 73156608, while the sum is 67.

The spelling of 164862797089 in words is "one hundred sixty-four billion, eight hundred sixty-two million, seven hundred ninety-seven thousand, eighty-nine".