164619143 has 16 divisors (see below), whose sum is σ = 188991936. Its totient is φ = 142041600.

The previous prime is 164619139. The next prime is 164619163. The reversal of 164619143 is 341916461.

It is a cyclic number.

It is not a de Polignac number, because 164619143 - 2² = 164619139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164619163) 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, 30905 + ... + 35837.

It is an arithmetic number, because the mean of its divisors is an integer number (11811996).

Almost surely, 2^164619143 is an apocalyptic number.

164619143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

164619143 is a deficient number, since it is larger than the sum of its proper divisors (24372793).

164619143 is a wasteful number, since it uses less digits than its factorization.

164619143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5114.

The product of its digits is 15552, while the sum is 35.

The square root of 164619143 is about 12830.3991753959. The cubic root of 164619143 is about 548.0583246835.

The spelling of 164619143 in words is "one hundred sixty-four million, six hundred nineteen thousand, one hundred forty-three".