165226140 has 36 divisors (see below), whose sum is σ = 501186504. Its totient is φ = 44060256.

The previous prime is 165226133. The next prime is 165226141. The reversal of 165226140 is 41622561.

165226140 is a `hidden beast` number, since 1 + 652 + 2 + 6 + 1 + 4 + 0 = 666.

165226140 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165226141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458782 + ... + 459141.

Almost surely, 2^165226140 is an apocalyptic number.

165226140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165226140 is an abundant number, since it is smaller than the sum of its proper divisors (335960364).

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

165226140 is a wasteful number, since it uses less digits than its factorization.

165226140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917938 (or 917933 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 165226140 is about 12854.0320522395. The cubic root of 165226140 is about 548.7311134130.

The spelling of 165226140 in words is "one hundred sixty-five million, two hundred twenty-six thousand, one hundred forty".