82158134 has 4 divisors (see below), whose sum is σ = 123237204. Its totient is φ = 41079066.

The previous prime is 82158121. The next prime is 82158143. The reversal of 82158134 is 43185128.

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

It is a self number, because there is not a number n which added to its sum of digits gives 82158134.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20539532 + ... + 20539535.

It is an arithmetic number, because the mean of its divisors is an integer number (30809301).

Almost surely, 2^82158134 is an apocalyptic number.

82158134 is a deficient number, since it is larger than the sum of its proper divisors (41079070).

82158134 is a wasteful number, since it uses less digits than its factorization.

82158134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41079069.

The product of its digits is 7680, while the sum is 32.

The square root of 82158134 is about 9064.1124220742. The cubic root of 82158134 is about 434.7272417001.

The spelling of 82158134 in words is "eighty-two million, one hundred fifty-eight thousand, one hundred thirty-four".