190771379 has 2 divisors, whose sum is σ = 190771380. Its totient is φ = 190771378.

The previous prime is 190771369. The next prime is 190771397. The reversal of 190771379 is 973177091.

It is a happy number.

Together with next prime (190771397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190771379 - 2⁴ = 190771363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190771369) 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, 95385689 + 95385690.

It is an arithmetic number, because the mean of its divisors is an integer number (95385690).

Almost surely, 2^190771379 is an apocalyptic number.

190771379 is a deficient number, since it is larger than the sum of its proper divisors (1).

190771379 is an equidigital number, since it uses as much as digits as its factorization.

190771379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 83349, while the sum is 44.

The square root of 190771379 is about 13812.0012670141. The cubic root of 190771379 is about 575.6666536278. Note that the first 4 decimals are identical.

The spelling of 190771379 in words is "one hundred ninety million, seven hundred seventy-one thousand, three hundred seventy-nine".