1653030666 has 160 divisors (see below), whose sum is σ = 4719116160. Its totient is φ = 421023744.

The previous prime is 1653030637. The next prime is 1653030689. The reversal of 1653030666 is 6660303561.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1653030666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 364026 + ... + 368538.

It is an arithmetic number, because the mean of its divisors is an integer number (29494476).

Almost surely, 2^1653030666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1653030666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2359558080).

1653030666 is an abundant number, since it is smaller than the sum of its proper divisors (3066085494).

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

1653030666 is a wasteful number, since it uses less digits than its factorization.

1653030666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570 (or 4561 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 1653030666 is about 40657.4798284399. The cubic root of 1653030666 is about 1182.3887896224.

The spelling of 1653030666 in words is "one billion, six hundred fifty-three million, thirty thousand, six hundred sixty-six".