81482165 has 8 divisors (see below), whose sum is σ = 102924960. Its totient is φ = 61754832.

The previous prime is 81482143. The next prime is 81482171. The reversal of 81482165 is 56128418.

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

It is a cyclic number.

It is not a de Polignac number, because 81482165 - 2¹² = 81478069 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428759 + ... + 428948.

It is an arithmetic number, because the mean of its divisors is an integer number (12865620).

Almost surely, 2^81482165 is an apocalyptic number.

It is an amenable number.

81482165 is a deficient number, since it is larger than the sum of its proper divisors (21442795).

81482165 is a wasteful number, since it uses less digits than its factorization.

81482165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857731.

The product of its digits is 15360, while the sum is 35.

The square root of 81482165 is about 9026.7471992961. The cubic root of 81482165 is about 433.5316945236.

The spelling of 81482165 in words is "eighty-one million, four hundred eighty-two thousand, one hundred sixty-five".