165141866 has 8 divisors (see below), whose sum is σ = 249081924. Its totient is φ = 82114560.

The previous prime is 165141853. The next prime is 165141871. The reversal of 165141866 is 668141561.

It can be written as a sum of positive squares in 2 ways, for example, as 94497841 + 70644025 = 9721^2 + 8405^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227735 + ... + 228458.

Almost surely, 2^165141866 is an apocalyptic number.

165141866 is a deficient number, since it is larger than the sum of its proper divisors (83940058).

165141866 is a wasteful number, since it uses less digits than its factorization.

165141866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456376.

The product of its digits is 34560, while the sum is 38.

The square root of 165141866 is about 12850.7535187630. The cubic root of 165141866 is about 548.6378036612.

The spelling of 165141866 in words is "one hundred sixty-five million, one hundred forty-one thousand, eight hundred sixty-six".