165340436 has 24 divisors (see below), whose sum is σ = 307590696. Its totient is φ = 77496320.

The previous prime is 165340433. The next prime is 165340459. The reversal of 165340436 is 634043561.

165340436 is digitally balanced in base 2, 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 4 ways, for example, as 117592336 + 47748100 = 10844^2 + 6910^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165340433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12746 + ... + 22206.

It is an arithmetic number, because the mean of its divisors is an integer number (12816279).

Almost surely, 2^165340436 is an apocalyptic number.

It is an amenable number.

165340436 is a deficient number, since it is larger than the sum of its proper divisors (142250260).

165340436 is a wasteful number, since it uses less digits than its factorization.

165340436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9739 (or 9737 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 165340436 is about 12858.4772037749. The cubic root of 165340436 is about 548.8576134029.

Adding to 165340436 its reverse (634043561), we get a palindrome (799383997).

The spelling of 165340436 in words is "one hundred sixty-five million, three hundred forty thousand, four hundred thirty-six".