165916814 has 8 divisors (see below), whose sum is σ = 284428848. Its totient is φ = 71107200.

The previous prime is 165916799. The next prime is 165916819. The reversal of 165916814 is 418619561.

165916814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165916819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5925587 + ... + 5925614.

It is an arithmetic number, because the mean of its divisors is an integer number (35553606).

Almost surely, 2^165916814 is an apocalyptic number.

165916814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

165916814 is a deficient number, since it is larger than the sum of its proper divisors (118512034).

165916814 is a wasteful number, since it uses less digits than its factorization.

165916814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11851210.

The product of its digits is 51840, while the sum is 41.

The square root of 165916814 is about 12880.8700793075. The cubic root of 165916814 is about 549.4946476589.

The spelling of 165916814 in words is "one hundred sixty-five million, nine hundred sixteen thousand, eight hundred fourteen".