82187619 has 8 divisors (see below), whose sum is σ = 112545360. Its totient is φ = 53310816.

The previous prime is 82187591. The next prime is 82187621. The reversal of 82187619 is 91678128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82187619 - 2¹² = 82183523 is a prime.

It is a super-2 number, since 2×82187619² = 13509609433778322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82187689) 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 7 ways as a sum of consecutive naturals, for example, 370104 + ... + 370325.

It is an arithmetic number, because the mean of its divisors is an integer number (14068170).

Almost surely, 2^82187619 is an apocalyptic number.

82187619 is a deficient number, since it is larger than the sum of its proper divisors (30357741).

82187619 is a wasteful number, since it uses less digits than its factorization.

82187619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740469.

The product of its digits is 48384, while the sum is 42.

The square root of 82187619 is about 9065.7387454085. The cubic root of 82187619 is about 434.7792406077.

The spelling of 82187619 in words is "eighty-two million, one hundred eighty-seven thousand, six hundred nineteen".