164980889 has 4 divisors (see below), whose sum is σ = 165027024. Its totient is φ = 164934756.

The previous prime is 164980861. The next prime is 164980943. The reversal of 164980889 is 988089461.

164980889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 164980889 - 2¹² = 164976793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164980889.

It is not an unprimeable number, because it can be changed into a prime (164980859) 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, 17207 + ... + 25020.

It is an arithmetic number, because the mean of its divisors is an integer number (41256756).

Almost surely, 2^164980889 is an apocalyptic number.

It is an amenable number.

164980889 is a deficient number, since it is larger than the sum of its proper divisors (46135).

164980889 is an equidigital number, since it uses as much as digits as its factorization.

164980889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46134.

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 164980889 is about 12844.4886624575. The cubic root of 164980889 is about 548.4594786402.

The spelling of 164980889 in words is "one hundred sixty-four million, nine hundred eighty thousand, eight hundred eighty-nine".