165009732749 has 8 divisors (see below), whose sum is σ = 166968404280. Its totient is φ = 163053386496.

The previous prime is 165009732721. The next prime is 165009732751. The reversal of 165009732749 is 947237900561.

165009732749 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 28575535849 + 136434196900 = 169043^2 + 369370^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165009732749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165009732749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165009732049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438344 + ... + 722609.

It is an arithmetic number, because the mean of its divisors is an integer number (20871050535).

Almost surely, 2^165009732749 is an apocalyptic number.

It is an amenable number.

165009732749 is a deficient number, since it is larger than the sum of its proper divisors (1958671531).

165009732749 is a wasteful number, since it uses less digits than its factorization.

165009732749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162639.

The product of its (nonzero) digits is 2857680, while the sum is 53.

The spelling of 165009732749 in words is "one hundred sixty-five billion, nine million, seven hundred thirty-two thousand, seven hundred forty-nine".