165582138 has 8 divisors (see below), whose sum is σ = 331164288. Its totient is φ = 55194044.

The previous prime is 165582119. The next prime is 165582167. The reversal of 165582138 is 831285561.

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

165582138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 165582096 and 165582105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13798506 + ... + 13798517.

It is an arithmetic number, because the mean of its divisors is an integer number (41395536).

Almost surely, 2^165582138 is an apocalyptic number.

165582138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165582138 is a wasteful number, since it uses less digits than its factorization.

165582138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27597028.

The product of its digits is 57600, while the sum is 39.

The square root of 165582138 is about 12867.8723182972. The cubic root of 165582138 is about 549.1249313395.

The spelling of 165582138 in words is "one hundred sixty-five million, five hundred eighty-two thousand, one hundred thirty-eight".