164375819 has 2 divisors, whose sum is σ = 164375820. Its totient is φ = 164375818.

The previous prime is 164375807. The next prime is 164375837. The reversal of 164375819 is 918573461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164375819 - 2²⁰ = 163327243 is a prime.

It is a super-2 number, since 2×164375819² = 54038819743841522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164375819.

It is not a weakly prime, because it can be changed into another prime (164371819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82187909 + 82187910.

It is an arithmetic number, because the mean of its divisors is an integer number (82187910).

Almost surely, 2^164375819 is an apocalyptic number.

164375819 is a deficient number, since it is larger than the sum of its proper divisors (1).

164375819 is an equidigital number, since it uses as much as digits as its factorization.

164375819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 164375819 is about 12820.9133450000. The cubic root of 164375819 is about 547.7881627006.

The spelling of 164375819 in words is "one hundred sixty-four million, three hundred seventy-five thousand, eight hundred nineteen".