1665165151 has 8 divisors (see below), whose sum is σ = 1797402320. Its totient is φ = 1533520512.

The previous prime is 1665165143. The next prime is 1665165163. The reversal of 1665165151 is 1515615661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1665165151 - 2³ = 1665165143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1665165151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665165101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142281 + ... + 153538.

It is an arithmetic number, because the mean of its divisors is an integer number (224675290).

Almost surely, 2^1665165151 is an apocalyptic number.

1665165151 is a deficient number, since it is larger than the sum of its proper divisors (132237169).

1665165151 is a wasteful number, since it uses less digits than its factorization.

1665165151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296265.

The product of its digits is 27000, while the sum is 37.

The square root of 1665165151 is about 40806.4351665274. The cubic root of 1665165151 is about 1185.2749457858.

The spelling of 1665165151 in words is "one billion, six hundred sixty-five million, one hundred sixty-five thousand, one hundred fifty-one".