164219395 has 4 divisors (see below), whose sum is σ = 197063280. Its totient is φ = 131375512.

The previous prime is 164219383. The next prime is 164219411. The reversal of 164219395 is 593912461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 593912461 = 211 ⋅2814751.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164219395 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16421935 + ... + 16421944.

It is an arithmetic number, because the mean of its divisors is an integer number (49265820).

Almost surely, 2^164219395 is an apocalyptic number.

164219395 is a deficient number, since it is larger than the sum of its proper divisors (32843885).

164219395 is an equidigital number, since it uses as much as digits as its factorization.

164219395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32843884.

The product of its digits is 58320, while the sum is 40.

The square root of 164219395 is about 12814.8115475804. The cubic root of 164219395 is about 547.6143447365.

The spelling of 164219395 in words is "one hundred sixty-four million, two hundred nineteen thousand, three hundred ninety-five".