164344243 has 16 divisors (see below), whose sum is σ = 200427520. Its totient is φ = 131616576.

The previous prime is 164344217. The next prime is 164344249. The reversal of 164344243 is 342443461.

It is not a de Polignac number, because 164344243 - 2⁵ = 164344211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164344249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1246 + ... + 18172.

It is an arithmetic number, because the mean of its divisors is an integer number (12526720).

Almost surely, 2^164344243 is an apocalyptic number.

164344243 is a deficient number, since it is larger than the sum of its proper divisors (36083277).

164344243 is a wasteful number, since it uses less digits than its factorization.

164344243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17026.

The product of its digits is 27648, while the sum is 31.

The square root of 164344243 is about 12819.6818603271. The cubic root of 164344243 is about 547.7530844131.

The spelling of 164344243 in words is "one hundred sixty-four million, three hundred forty-four thousand, two hundred forty-three".