165367641 has 8 divisors (see below), whose sum is σ = 220549824. Its totient is φ = 110215280.

The previous prime is 165367627. The next prime is 165367649. The reversal of 165367641 is 146763561.

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 165367641 - 2¹⁹ = 164843353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165367641.

It is not an unprimeable number, because it can be changed into a prime (165367649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16315 + ... + 24431.

It is an arithmetic number, because the mean of its divisors is an integer number (27568728).

Almost surely, 2^165367641 is an apocalyptic number.

It is an amenable number.

165367641 is a deficient number, since it is larger than the sum of its proper divisors (55182183).

165367641 is an equidigital number, since it uses as much as digits as its factorization.

165367641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14911.

The product of its digits is 90720, while the sum is 39.

The square root of 165367641 is about 12859.5350226981. The cubic root of 165367641 is about 548.8877146349.

The spelling of 165367641 in words is "one hundred sixty-five million, three hundred sixty-seven thousand, six hundred forty-one".