165740963 has 8 divisors (see below), whose sum is σ = 169821696. Its totient is φ = 161670600.

The previous prime is 165740947. The next prime is 165740989. The reversal of 165740963 is 369047561.

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 165740963 - 2⁴ = 165740947 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 165740963.

It is not an unprimeable number, because it can be changed into a prime (165740563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37058 + ... + 41288.

It is an arithmetic number, because the mean of its divisors is an integer number (21227712).

Almost surely, 2^165740963 is an apocalyptic number.

165740963 is a deficient number, since it is larger than the sum of its proper divisors (4080733).

165740963 is an equidigital number, since it uses as much as digits as its factorization.

165740963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5185.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 165740963 is about 12874.0422168020. The cubic root of 165740963 is about 549.3004472453.

The spelling of 165740963 in words is "one hundred sixty-five million, seven hundred forty thousand, nine hundred sixty-three".