190838213 has 4 divisors (see below), whose sum is σ = 194438988. Its totient is φ = 187237440.

The previous prime is 190838191. The next prime is 190838233. The reversal of 190838213 is 312838091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165456769 + 25381444 = 12863^2 + 5038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190838213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190838233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1800308 + ... + 1800413.

It is an arithmetic number, because the mean of its divisors is an integer number (48609747).

Almost surely, 2^190838213 is an apocalyptic number.

It is an amenable number.

190838213 is a deficient number, since it is larger than the sum of its proper divisors (3600775).

190838213 is an equidigital number, since it uses as much as digits as its factorization.

190838213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600774.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 190838213 is about 13814.4204728248. The cubic root of 190838213 is about 575.7338712807.

The spelling of 190838213 in words is "one hundred ninety million, eight hundred thirty-eight thousand, two hundred thirteen".