190513205 has 8 divisors (see below), whose sum is σ = 228715704. Its totient is φ = 152344000.

The previous prime is 190513201. The next prime is 190513207. The reversal of 190513205 is 502315091.

It can be written as a sum of positive squares in 4 ways, for example, as 27133681 + 163379524 = 5209^2 + 12782^2 .

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

It is not a de Polignac number, because 190513205 - 2² = 190513201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190513201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6755 + ... + 20655.

It is an arithmetic number, because the mean of its divisors is an integer number (28589463).

Almost surely, 2^190513205 is an apocalyptic number.

It is an amenable number.

190513205 is a deficient number, since it is larger than the sum of its proper divisors (38202499).

190513205 is a wasteful number, since it uses less digits than its factorization.

190513205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16647.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 190513205 is about 13802.6521002306. The cubic root of 190513205 is about 575.4068500553.

Adding to 190513205 its reverse (502315091), we get a palindrome (692828296).

The spelling of 190513205 in words is "one hundred ninety million, five hundred thirteen thousand, two hundred five".