164419 has 2 divisors, whose sum is σ = 164420. Its totient is φ = 164418.

The previous prime is 164413. The next prime is 164429. The reversal of 164419 is 914461.

It is a weak prime.

It is an emirp because it is prime and its reverse (914461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164419 - 2⁵ = 164387 is a prime.

It is a super-3 number, since 3×164419³ = 13334516164716177, which contains 333 as substring. Note that it is a super-d number also for d = 2.

164419 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 164393 and 164402.

It is not a weakly prime, because it can be changed into another prime (164413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82209 + 82210.

It is an arithmetic number, because the mean of its divisors is an integer number (82210).

2¹⁶⁴⁴¹⁹ is an apocalyptic number.

164419 is a deficient number, since it is larger than the sum of its proper divisors (1).

164419 is an equidigital number, since it uses as much as digits as its factorization.

164419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 164419 is about 405.4861279995. The cubic root of 164419 is about 54.7836125898.

The spelling of 164419 in words is "one hundred sixty-four thousand, four hundred nineteen".