165155366 has 4 divisors (see below), whose sum is σ = 247733052. Its totient is φ = 82577682.

The previous prime is 165155359. The next prime is 165155407. The reversal of 165155366 is 663551561.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41288840 + ... + 41288843.

It is an arithmetic number, because the mean of its divisors is an integer number (61933263).

Almost surely, 2^165155366 is an apocalyptic number.

165155366 is a deficient number, since it is larger than the sum of its proper divisors (82577686).

165155366 is an equidigital number, since it uses as much as digits as its factorization.

165155366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82577685.

The product of its digits is 81000, while the sum is 38.

The square root of 165155366 is about 12851.2787690564. The cubic root of 165155366 is about 548.6527532491.

The spelling of 165155366 in words is "one hundred sixty-five million, one hundred fifty-five thousand, three hundred sixty-six".