82118481 has 8 divisors (see below), whose sum is σ = 110217024. Its totient is φ = 54382800.

The previous prime is 82118461. The next prime is 82118521. The reversal of 82118481 is 18481128.

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

It is not a de Polignac number, because 82118481 - 2⁶ = 82118417 is a prime.

It is a super-2 number, since 2×82118481² = 13486889843494722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82118461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90186 + ... + 91091.

It is an arithmetic number, because the mean of its divisors is an integer number (13777128).

Almost surely, 2^82118481 is an apocalyptic number.

It is an amenable number.

82118481 is a deficient number, since it is larger than the sum of its proper divisors (28098543).

82118481 is a wasteful number, since it uses less digits than its factorization.

82118481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181431.

The product of its digits is 4096, while the sum is 33.

The square root of 82118481 is about 9061.9247955387. The cubic root of 82118481 is about 434.6572911769.

The spelling of 82118481 in words is "eighty-two million, one hundred eighteen thousand, four hundred eighty-one".