1665165152 has 48 divisors (see below), whose sum is σ = 3875830560. Its totient is φ = 689031168.

The previous prime is 1665165143. The next prime is 1665165163. The reversal of 1665165152 is 2515615661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121673 + ... + 134664.

It is an arithmetic number, because the mean of its divisors is an integer number (80746470).

Almost surely, 2^1665165152 is an apocalyptic number.

It is an amenable number.

1665165152 is an abundant number, since it is smaller than the sum of its proper divisors (2210665408).

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

1665165152 is a wasteful number, since it uses less digits than its factorization.

1665165152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256383 (or 256375 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The square root of 1665165152 is about 40806.4351787803. The cubic root of 1665165152 is about 1185.2749460231.

The spelling of 1665165152 in words is "one billion, six hundred sixty-five million, one hundred sixty-five thousand, one hundred fifty-two".