164219739 has 16 divisors (see below), whose sum is σ = 225942528. Its totient is φ = 106036992.

The previous prime is 164219723. The next prime is 164219771. The reversal of 164219739 is 937912461.

It is not a de Polignac number, because 164219739 - 2⁴ = 164219723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164219739.

It is not an unprimeable number, because it can be changed into a prime (164219789) 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, 7674 + ... + 19680.

It is an arithmetic number, because the mean of its divisors is an integer number (14121408).

Almost surely, 2^164219739 is an apocalyptic number.

164219739 is a deficient number, since it is larger than the sum of its proper divisors (61722789).

164219739 is a wasteful number, since it uses less digits than its factorization.

164219739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12154.

The product of its digits is 81648, while the sum is 42.

The square root of 164219739 is about 12814.8249695421. The cubic root of 164219739 is about 547.6147271096.

The spelling of 164219739 in words is "one hundred sixty-four million, two hundred nineteen thousand, seven hundred thirty-nine".