164841919 has 16 divisors (see below), whose sum is σ = 189002880. Its totient is φ = 142400160.

The previous prime is 164841913. The next prime is 164841923. The reversal of 164841919 is 919148461.

It is a cyclic number.

It is not a de Polignac number, because 164841919 - 2²⁵ = 131287487 is a prime.

It is a super-2 number, since 2×164841919² = 54345716519205122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164841913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12792 + ... + 22210.

It is an arithmetic number, because the mean of its divisors is an integer number (11812680).

Almost surely, 2^164841919 is an apocalyptic number.

164841919 is a deficient number, since it is larger than the sum of its proper divisors (24160961).

164841919 is a wasteful number, since it uses less digits than its factorization.

164841919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510.

The product of its digits is 62208, while the sum is 43.

The square root of 164841919 is about 12839.0778095625. The cubic root of 164841919 is about 548.3054389307.

The spelling of 164841919 in words is "one hundred sixty-four million, eight hundred forty-one thousand, nine hundred nineteen".