190135208 has 16 divisors (see below), whose sum is σ = 377474580. Its totient is φ = 89475328.

The previous prime is 190135201. The next prime is 190135237. The reversal of 190135208 is 802531091.

It can be written as a sum of positive squares in 2 ways, for example, as 171662404 + 18472804 = 13102^2 + 4298^2 .

It is not an unprimeable number, because it can be changed into a prime (190135201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698891 + ... + 699162.

Almost surely, 2^190135208 is an apocalyptic number.

It is an amenable number.

190135208 is a deficient number, since it is larger than the sum of its proper divisors (187339372).

190135208 is a wasteful number, since it uses less digits than its factorization.

190135208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398076 (or 1398072 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 190135208 is about 13788.9523895037. The cubic root of 190135208 is about 575.0260434329.

Adding to 190135208 its reverse (802531091), we get a palindrome (992666299).

The spelling of 190135208 in words is "one hundred ninety million, one hundred thirty-five thousand, two hundred eight".