189816071 has 2 divisors, whose sum is σ = 189816072. Its totient is φ = 189816070.

The previous prime is 189816047. The next prime is 189816089. The reversal of 189816071 is 170618981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189816071 - 2²² = 185621767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189816091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94908035 + 94908036.

It is an arithmetic number, because the mean of its divisors is an integer number (94908036).

Almost surely, 2^189816071 is an apocalyptic number.

189816071 is a deficient number, since it is larger than the sum of its proper divisors (1).

189816071 is an equidigital number, since it uses as much as digits as its factorization.

189816071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 41.

The square root of 189816071 is about 13777.3753305918. The cubic root of 189816071 is about 574.7041411795.

It can be divided in two parts, 18981 and 6071, that added together give a palindrome (25052).

The spelling of 189816071 in words is "one hundred eighty-nine million, eight hundred sixteen thousand, seventy-one".