190394213 has 2 divisors, whose sum is σ = 190394214. Its totient is φ = 190394212.

The previous prime is 190394189. The next prime is 190394233. The reversal of 190394213 is 312493091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190384804 + 9409 = 13798^2 + 97^2 .

It is a cyclic number.

It is not a de Polignac number, because 190394213 - 2¹² = 190390117 is a prime.

It is a super-4 number, since 4×190394213⁴ (a number of 34 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 190394213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190394233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95197106 + 95197107.

It is an arithmetic number, because the mean of its divisors is an integer number (95197107).

Almost surely, 2^190394213 is an apocalyptic number.

It is an amenable number.

190394213 is a deficient number, since it is larger than the sum of its proper divisors (1).

190394213 is an equidigital number, since it uses as much as digits as its factorization.

190394213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 190394213 is about 13798.3409509984. The cubic root of 190394213 is about 575.2870279643.

The spelling of 190394213 in words is "one hundred ninety million, three hundred ninety-four thousand, two hundred thirteen".