190368221 has 2 divisors, whose sum is σ = 190368222. Its totient is φ = 190368220.

The previous prime is 190368197. The next prime is 190368229. The reversal of 190368221 is 122863091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144264121 + 46104100 = 12011^2 + 6790^2 .

It is a cyclic number.

It is not a de Polignac number, because 190368221 - 2²² = 186173917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190368229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95184110 + 95184111.

It is an arithmetic number, because the mean of its divisors is an integer number (95184111).

Almost surely, 2^190368221 is an apocalyptic number.

It is an amenable number.

190368221 is a deficient number, since it is larger than the sum of its proper divisors (1).

190368221 is an equidigital number, since it uses as much as digits as its factorization.

190368221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 190368221 is about 13797.3990664908. The cubic root of 190368221 is about 575.2608480004.

The spelling of 190368221 in words is "one hundred ninety million, three hundred sixty-eight thousand, two hundred twenty-one".