164215443 has 16 divisors (see below), whose sum is σ = 252147456. Its totient is φ = 93119520.

The previous prime is 164215439. The next prime is 164215453. The reversal of 164215443 is 344512461.

It is not a de Polignac number, because 164215443 - 2² = 164215439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164215443.

It is not an unprimeable number, because it can be changed into a prime (164215453) 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, 27096 + ... + 32597.

It is an arithmetic number, because the mean of its divisors is an integer number (15759216).

Almost surely, 2^164215443 is an apocalyptic number.

164215443 is a deficient number, since it is larger than the sum of its proper divisors (87932013).

164215443 is a wasteful number, since it uses less digits than its factorization.

164215443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59834.

The product of its digits is 11520, while the sum is 30.

The square root of 164215443 is about 12814.6573500816. The cubic root of 164215443 is about 547.6099518546.

The spelling of 164215443 in words is "one hundred sixty-four million, two hundred fifteen thousand, four hundred forty-three".