90161168 has 40 divisors (see below), whose sum is σ = 177655296. Its totient is φ = 44323200.

The previous prime is 90161161. The next prime is 90161177. The reversal of 90161168 is 86116109.

It is not an unprimeable number, because it can be changed into a prime (90161161) 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, 471953 + ... + 472143.

Almost surely, 2^90161168 is an apocalyptic number.

It is an amenable number.

90161168 is a deficient number, since it is larger than the sum of its proper divisors (87494128).

90161168 is a wasteful number, since it uses less digits than its factorization.

90161168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 90161168 is about 9495.3234805350. The cubic root of 90161168 is about 448.4078184849.

The spelling of 90161168 in words is "ninety million, one hundred sixty-one thousand, one hundred sixty-eight".