82019433 has 4 divisors (see below), whose sum is σ = 109359248. Its totient is φ = 54679620.

The previous prime is 82019429. The next prime is 82019471. The reversal of 82019433 is 33491028.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 82019433 - 2² = 82019429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82019433.

It is not an unprimeable number, because it can be changed into a prime (82014433) 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, 13669903 + ... + 13669908.

It is an arithmetic number, because the mean of its divisors is an integer number (27339812).

Almost surely, 2^82019433 is an apocalyptic number.

It is an amenable number.

82019433 is a deficient number, since it is larger than the sum of its proper divisors (27339815).

82019433 is a wasteful number, since it uses less digits than its factorization.

82019433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27339814.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 82019433 is about 9056.4580824956. The cubic root of 82019433 is about 434.4824655038.

The spelling of 82019433 in words is "eighty-two million, nineteen thousand, four hundred thirty-three".