165390214 has 8 divisors (see below), whose sum is σ = 270638568. Its totient is φ = 75177360.

The previous prime is 165390209. The next prime is 165390233. The reversal of 165390214 is 412093561.

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

It is a super-3 number, since 3×165390214³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

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, 3758847 + ... + 3758890.

It is an arithmetic number, because the mean of its divisors is an integer number (33829821).

Almost surely, 2^165390214 is an apocalyptic number.

165390214 is a deficient number, since it is larger than the sum of its proper divisors (105248354).

165390214 is a wasteful number, since it uses less digits than its factorization.

165390214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517750.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 165390214 is about 12860.4126683400. The cubic root of 165390214 is about 548.9126882404.

The spelling of 165390214 in words is "one hundred sixty-five million, three hundred ninety thousand, two hundred fourteen".