82017019 has 4 divisors (see below), whose sum is σ = 93733744. Its totient is φ = 70300296.

The previous prime is 82016989. The next prime is 82017029. The reversal of 82017019 is 91071028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82017019 - 2¹¹ = 82014971 is a prime.

It is a super-2 number, since 2×82017019² = 13453582811292722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82017029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5858352 + ... + 5858365.

It is an arithmetic number, because the mean of its divisors is an integer number (23433436).

Almost surely, 2^82017019 is an apocalyptic number.

82017019 is a deficient number, since it is larger than the sum of its proper divisors (11716725).

82017019 is a wasteful number, since it uses less digits than its factorization.

82017019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11716724.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 82017019 is about 9056.3248064543. The cubic root of 82017019 is about 434.4782028922.

The spelling of 82017019 in words is "eighty-two million, seventeen thousand, nineteen".