190571971 has 2 divisors, whose sum is σ = 190571972. Its totient is φ = 190571970.

The previous prime is 190571933. The next prime is 190571987. The reversal of 190571971 is 179175091.

It is a strong prime.

It is an emirp because it is prime and its reverse (179175091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190571971 - 2¹⁵ = 190539203 is a prime.

It is a super-2 number, since 2×190571971² = 72635352261649682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190571371) 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, 95285985 + 95285986.

It is an arithmetic number, because the mean of its divisors is an integer number (95285986).

Almost surely, 2^190571971 is an apocalyptic number.

190571971 is a deficient number, since it is larger than the sum of its proper divisors (1).

190571971 is an equidigital number, since it uses as much as digits as its factorization.

190571971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 40.

The square root of 190571971 is about 13804.7807298776. The cubic root of 190571971 is about 575.4660076043.

The spelling of 190571971 in words is "one hundred ninety million, five hundred seventy-one thousand, nine hundred seventy-one".