190020253 has 4 divisors (see below), whose sum is σ = 190558908. Its totient is φ = 189481600.

The previous prime is 190020223. The next prime is 190020263. The reversal of 190020253 is 352020091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352020091 = 4271 ⋅82421.

It can be written as a sum of positive squares in 2 ways, for example, as 80964004 + 109056249 = 8998^2 + 10443^2 .

It is a cyclic number.

It is not a de Polignac number, because 190020253 - 2⁵ = 190020221 is a prime.

It is a super-2 number, since 2×190020253² = 72215393100368018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190020223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268798 + ... + 269503.

It is an arithmetic number, because the mean of its divisors is an integer number (47639727).

Almost surely, 2^190020253 is an apocalyptic number.

It is an amenable number.

190020253 is a deficient number, since it is larger than the sum of its proper divisors (538655).

190020253 is an equidigital number, since it uses as much as digits as its factorization.

190020253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538654.

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

The square root of 190020253 is about 13784.7833860384. The cubic root of 190020253 is about 574.9101339078.

The spelling of 190020253 in words is "one hundred ninety million, twenty thousand, two hundred fifty-three".