190334021 has 2 divisors, whose sum is σ = 190334022. Its totient is φ = 190334020.

The previous prime is 190333999. The next prime is 190334033. The reversal of 190334021 is 120433091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149181796 + 41152225 = 12214^2 + 6415^2 .

It is an emirp because it is prime and its reverse (120433091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190334021 - 2¹⁴ = 190317637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190334041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95167010 + 95167011.

It is an arithmetic number, because the mean of its divisors is an integer number (95167011).

Almost surely, 2^190334021 is an apocalyptic number.

It is an amenable number.

190334021 is a deficient number, since it is larger than the sum of its proper divisors (1).

190334021 is an equidigital number, since it uses as much as digits as its factorization.

190334021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 190334021 is about 13796.1596468003. The cubic root of 190334021 is about 575.2263970485.

The spelling of 190334021 in words is "one hundred ninety million, three hundred thirty-four thousand, twenty-one".