82019143 has 16 divisors (see below), whose sum is σ = 89164800. Its totient is φ = 75198240.

The previous prime is 82019141. The next prime is 82019153. The reversal of 82019143 is 34191028.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82019143 - 2¹ = 82019141 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 (82019141) 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 in 15 ways as a sum of consecutive naturals, for example, 79038 + ... + 80068.

It is an arithmetic number, because the mean of its divisors is an integer number (5572800).

Almost surely, 2^82019143 is an apocalyptic number.

82019143 is a deficient number, since it is larger than the sum of its proper divisors (7145657).

82019143 is a wasteful number, since it uses less digits than its factorization.

82019143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 82019143 is about 9056.4420718072. The cubic root of 82019143 is about 434.4819534298.

The spelling of 82019143 in words is "eighty-two million, nineteen thousand, one hundred forty-three".