190720073 has 2 divisors, whose sum is σ = 190720074. Its totient is φ = 190720072.

The previous prime is 190720063. The next prime is 190720109. The reversal of 190720073 is 370027091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163763209 + 26956864 = 12797^2 + 5192^2 .

It is a cyclic number.

It is not a de Polignac number, because 190720073 - 2⁶ = 190720009 is a prime.

It is not a weakly prime, because it can be changed into another prime (190720063) by changing a digit.

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 as a sum of consecutive naturals, namely, 95360036 + 95360037.

It is an arithmetic number, because the mean of its divisors is an integer number (95360037).

Almost surely, 2^190720073 is an apocalyptic number.

It is an amenable number.

190720073 is a deficient number, since it is larger than the sum of its proper divisors (1).

190720073 is an equidigital number, since it uses as much as digits as its factorization.

190720073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 190720073 is about 13810.1438442907. The cubic root of 190720073 is about 575.6150424591.

The spelling of 190720073 in words is "one hundred ninety million, seven hundred twenty thousand, seventy-three".