165140530 has 8 divisors (see below), whose sum is σ = 297252972. Its totient is φ = 66056208.

The previous prime is 165140501. The next prime is 165140531. The reversal of 165140530 is 35041561.

165140530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 150479289 + 14661241 = 12267^2 + 3829^2 .

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

It is a super-4 number, since 4×165140530⁴ (a number of 34 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165140495 and 165140504.

It is not an unprimeable number, because it can be changed into a prime (165140531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8257017 + ... + 8257036.

Almost surely, 2^165140530 is an apocalyptic number.

165140530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165140530 is a deficient number, since it is larger than the sum of its proper divisors (132112442).

165140530 is a wasteful number, since it uses less digits than its factorization.

165140530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16514060.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 165140530 is about 12850.7015372703. The cubic root of 165140530 is about 548.6363241614.

The spelling of 165140530 in words is "one hundred sixty-five million, one hundred forty thousand, five hundred thirty".