165189642 has 16 divisors (see below), whose sum is σ = 333786432. Its totient is φ = 54495360.

The previous prime is 165189637. The next prime is 165189643. The reversal of 165189642 is 246981561.

It is a junction number, because it is equal to n+sod(n) for n = 165189594 and 165189603.

It is not an unprimeable number, because it can be changed into a prime (165189643) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 141334 + ... + 142497.

It is an arithmetic number, because the mean of its divisors is an integer number (20861652).

Almost surely, 2^165189642 is an apocalyptic number.

165189642 is an abundant number, since it is smaller than the sum of its proper divisors (168596790).

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

165189642 is a wasteful number, since it uses less digits than its factorization.

165189642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283933.

The product of its digits is 103680, while the sum is 42.

The square root of 165189642 is about 12852.6122636606. The cubic root of 165189642 is about 548.6907060395.

The spelling of 165189642 in words is "one hundred sixty-five million, one hundred eighty-nine thousand, six hundred forty-two".