168430090 has 16 divisors (see below), whose sum is σ = 304358472. Its totient is φ = 67108864.

The previous prime is 168430063. The next prime is 168430151. The reversal of 168430090 is 90034861.

168430090 is nontrivially palindromic in base 4 and base 16.

It can be written as a sum of positive squares in 4 ways, for example, as 157678249 + 10751841 = 12557^2 + 3279^2 .

168430090 is an undulating number in base 16.

It is a zygodrome in base 4.

It is an unprimeable number.

In principle, a polygon with 168430090 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30199 + ... + 35338.

Almost surely, 2^168430090 is an apocalyptic number.

168430090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168430090 is a deficient number, since it is larger than the sum of its proper divisors (135928382).

168430090 is a wasteful number, since it uses less digits than its factorization.

168430090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65801.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 168430090 is about 12978.0618737930. The cubic root of 168430090 is about 552.2553013715.

The spelling of 168430090 in words is "one hundred sixty-eight million, four hundred thirty thousand, ninety".