1665168336 has 120 divisors (see below), whose sum is σ = 5034018080. Its totient is φ = 510789888.

The previous prime is 1665168331. The next prime is 1665168359. The reversal of 1665168336 is 6338615661.

It is a junction number, because it is equal to n+sod(n) for n = 1665168291 and 1665168300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665168331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 708315 + ... + 710661.

Almost surely, 2^1665168336 is an apocalyptic number.

1665168336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1665168336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2517009040).

1665168336 is an abundant number, since it is smaller than the sum of its proper divisors (3368849744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1665168336 is a wasteful number, since it uses less digits than its factorization.

1665168336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753 (or 2744 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 1665168336 is about 40806.4741922161. The cubic root of 1665168336 is about 1185.2757014863.

The spelling of 1665168336 in words is "one billion, six hundred sixty-five million, one hundred sixty-eight thousand, three hundred thirty-six".