163216090 has 16 divisors (see below), whose sum is σ = 295763400. Its totient is φ = 64847680.

The previous prime is 163216069. The next prime is 163216091. The reversal of 163216090 is 90612361.

It can be written as a sum of positive squares in 4 ways, for example, as 62995969 + 100220121 = 7937^2 + 10011^2 .

It is not an unprimeable number, because it can be changed into a prime (163216091) 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, 53281 + ... + 56260.

Almost surely, 2^163216090 is an apocalyptic number.

163216090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163216090 is a deficient number, since it is larger than the sum of its proper divisors (132547310).

163216090 is a wasteful number, since it uses less digits than its factorization.

163216090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109697.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 163216090 is about 12775.6052694187. The cubic root of 163216090 is about 546.4968418714.

It can be divided in two parts, 1632160 and 90, that multiplied together give a square (146894400 = 12120²).

The spelling of 163216090 in words is "one hundred sixty-three million, two hundred sixteen thousand, ninety".