190820271 has 4 divisors (see below), whose sum is σ = 254427032. Its totient is φ = 127213512.

The previous prime is 190820153. The next prime is 190820297. The reversal of 190820271 is 172028091.

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

It is not a de Polignac number, because 190820271 - 2¹⁹ = 190295983 is a prime.

It is a super-4 number, since 4×190820271⁴ (a number of 34 digits) contains 4444 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 (190820771) 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, 31803376 + ... + 31803381.

It is an arithmetic number, because the mean of its divisors is an integer number (63606758).

Almost surely, 2^190820271 is an apocalyptic number.

190820271 is a deficient number, since it is larger than the sum of its proper divisors (63606761).

190820271 is an equidigital number, since it uses as much as digits as its factorization.

190820271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63606760.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 190820271 is about 13813.7710636886. The cubic root of 190820271 is about 575.7158278280.

The spelling of 190820271 in words is "one hundred ninety million, eight hundred twenty thousand, two hundred seventy-one".