1665130068 has 96 divisors (see below), whose sum is σ = 4965497600. Its totient is φ = 472687488.

The previous prime is 1665130009. The next prime is 1665130069. The reversal of 1665130068 is 8600315661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665130069) 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 31 ways as a sum of consecutive naturals, for example, 111678 + ... + 125706.

Almost surely, 2^1665130068 is an apocalyptic number.

1665130068 is a gapful number since it is divisible by the number (18) 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 1665130068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2482748800).

1665130068 is an abundant number, since it is smaller than the sum of its proper divisors (3300367532).

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

1665130068 is a wasteful number, since it uses less digits than its factorization.

1665130068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14206 (or 14198 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1665130068 is about 40806.0052933389. The cubic root of 1665130068 is about 1185.2666216279.

The spelling of 1665130068 in words is "one billion, six hundred sixty-five million, one hundred thirty thousand, sixty-eight".