163649085 has 8 divisors (see below), whose sum is σ = 261838560. Its totient is φ = 87279504.

The previous prime is 163649069. The next prime is 163649111. The reversal of 163649085 is 580946361.

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

It is not a de Polignac number, because 163649085 - 2⁴ = 163649069 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 5454955 + ... + 5454984.

It is an arithmetic number, because the mean of its divisors is an integer number (32729820).

Almost surely, 2^163649085 is an apocalyptic number.

163649085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163649085 is a deficient number, since it is larger than the sum of its proper divisors (98189475).

163649085 is a wasteful number, since it uses less digits than its factorization.

163649085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10909947.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 163649085 is about 12792.5402090437. The cubic root of 163649085 is about 546.9796812290.

It can be divided in two parts, 1636 and 49085, that added together give a triangular number (50721 = T₃₁₈).

The spelling of 163649085 in words is "one hundred sixty-three million, six hundred forty-nine thousand, eighty-five".