165416047 has 4 divisors (see below), whose sum is σ = 166000840. Its totient is φ = 164831256.

The previous prime is 165416039. The next prime is 165416051. The reversal of 165416047 is 740614561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165416047 - 2³ = 165416039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165416057) 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, 291972 + ... + 292537.

It is an arithmetic number, because the mean of its divisors is an integer number (41500210).

Almost surely, 2^165416047 is an apocalyptic number.

165416047 is a deficient number, since it is larger than the sum of its proper divisors (584793).

165416047 is an equidigital number, since it uses as much as digits as its factorization.

165416047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584792.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 165416047 is about 12861.4169903631. The cubic root of 165416047 is about 548.9412657540.

The spelling of 165416047 in words is "one hundred sixty-five million, four hundred sixteen thousand, forty-seven".