163965316 has 24 divisors (see below), whose sum is σ = 292403160. Its totient is φ = 80428800.

The previous prime is 163965311. The next prime is 163965331. The reversal of 163965316 is 613569361.

It can be written as a sum of positive squares in 4 ways, for example, as 3841600 + 160123716 = 1960^2 + 12654^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (163965311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138246 + ... + 139426.

It is an arithmetic number, because the mean of its divisors is an integer number (12183465).

Almost surely, 2^163965316 is an apocalyptic number.

It is an amenable number.

163965316 is a deficient number, since it is larger than the sum of its proper divisors (128437844).

163965316 is a wasteful number, since it uses less digits than its factorization.

163965316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815 (or 1813 counting only the distinct ones).

The product of its digits is 87480, while the sum is 40.

The square root of 163965316 is about 12804.8942205705. The cubic root of 163965316 is about 547.3317773734.

It can be divided in two parts, 16396 and 5316, that added together give a palindrome (21712).

The spelling of 163965316 in words is "one hundred sixty-three million, nine hundred sixty-five thousand, three hundred sixteen".