164589090 has 16 divisors (see below), whose sum is σ = 395013888. Its totient is φ = 43890416.

The previous prime is 164589071. The next prime is 164589091. The reversal of 164589090 is 90985461.

It is not an unprimeable number, because it can be changed into a prime (164589091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2743122 + ... + 2743181.

It is an arithmetic number, because the mean of its divisors is an integer number (24688368).

Almost surely, 2^164589090 is an apocalyptic number.

164589090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164589090 is an abundant number, since it is smaller than the sum of its proper divisors (230424798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164589090 is a wasteful number, since it uses less digits than its factorization.

164589090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486313.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 164589090 is about 12829.2279580651. The cubic root of 164589090 is about 548.0249713344.

The spelling of 164589090 in words is "one hundred sixty-four million, five hundred eighty-nine thousand, ninety".