190820473 has 2 divisors, whose sum is σ = 190820474. Its totient is φ = 190820472.

The previous prime is 190820447. The next prime is 190820533. The reversal of 190820473 is 374028091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123054649 + 67765824 = 11093^2 + 8232^2 .

It is a cyclic number.

It is not a de Polignac number, because 190820473 - 2²¹ = 188723321 is a prime.

It is not a weakly prime, because it can be changed into another prime (190829473) 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 as a sum of consecutive naturals, namely, 95410236 + 95410237.

It is an arithmetic number, because the mean of its divisors is an integer number (95410237).

Almost surely, 2^190820473 is an apocalyptic number.

It is an amenable number.

190820473 is a deficient number, since it is larger than the sum of its proper divisors (1).

190820473 is an equidigital number, since it uses as much as digits as its factorization.

190820473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 190820473 is about 13813.7783752310. The cubic root of 190820473 is about 575.7160309765.

The spelling of 190820473 in words is "one hundred ninety million, eight hundred twenty thousand, four hundred seventy-three".