165990141 has 12 divisors (see below), whose sum is σ = 248644032. Its totient is φ = 110659932.

The previous prime is 165990133. The next prime is 165990157. The reversal of 165990141 is 141099561.

It is not a de Polignac number, because 165990141 - 2³ = 165990133 is a prime.

It is a super-3 number, since 3×165990141³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165990096 and 165990105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165994141) 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, 341301 + ... + 341786.

It is an arithmetic number, because the mean of its divisors is an integer number (20720336).

Almost surely, 2^165990141 is an apocalyptic number.

It is an amenable number.

165990141 is a deficient number, since it is larger than the sum of its proper divisors (82653891).

165990141 is an frugal number, since it uses more digits than its factorization.

165990141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683102 (or 683090 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 165990141 is about 12883.7161176425. The cubic root of 165990141 is about 549.5755855271.

The spelling of 165990141 in words is "one hundred sixty-five million, nine hundred ninety thousand, one hundred forty-one".