165854383459 has 16 divisors (see below), whose sum is σ = 174463967520. Its totient is φ = 157439842560.

The previous prime is 165854383447. The next prime is 165854383483. The reversal of 165854383459 is 954383458561.

165854383459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 165854383459 - 2¹⁷ = 165854252387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a junction number, because it is equal to n+sod(n) for n = 165854383397 and 165854383406.

It is not an unprimeable number, because it can be changed into a prime (165854383439) 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 15 ways as a sum of consecutive naturals, for example, 4185192 + ... + 4224634.

It is an arithmetic number, because the mean of its divisors is an integer number (10903997970).

Almost surely, 2^165854383459 is an apocalyptic number.

165854383459 is a deficient number, since it is larger than the sum of its proper divisors (8609584061).

165854383459 is a wasteful number, since it uses less digits than its factorization.

165854383459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41910.

The product of its digits is 62208000, while the sum is 61.

It can be divided in two parts, 16585 and 4383459, that added together give a palindrome (4400044).

The spelling of 165854383459 in words is "one hundred sixty-five billion, eight hundred fifty-four million, three hundred eighty-three thousand, four hundred fifty-nine".