190023205 has 4 divisors (see below), whose sum is σ = 228027852. Its totient is φ = 152018560.

The previous prime is 190023191. The next prime is 190023221. The reversal of 190023205 is 502320091.

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 50452609 + 139570596 = 7103^2 + 11814^2 .

It is not a de Polignac number, because 190023205 - 2²³ = 181634597 is a prime.

It is a super-2 number, since 2×190023205² = 72217636876944050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19002316 + ... + 19002325.

It is an arithmetic number, because the mean of its divisors is an integer number (57006963).

Almost surely, 2^190023205 is an apocalyptic number.

It is an amenable number.

190023205 is a deficient number, since it is larger than the sum of its proper divisors (38004647).

190023205 is an equidigital number, since it uses as much as digits as its factorization.

190023205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38004646.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 190023205 is about 13784.8904602104. The cubic root of 190023205 is about 574.9131110043.

Adding to 190023205 its reverse (502320091), we get a palindrome (692343296).

The spelling of 190023205 in words is "one hundred ninety million, twenty-three thousand, two hundred five".