189597071 has 2 divisors, whose sum is σ = 189597072. Its totient is φ = 189597070.

The previous prime is 189597061. The next prime is 189597103. The reversal of 189597071 is 170795981.

189597071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189597071 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189597061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94798535 + 94798536.

It is an arithmetic number, because the mean of its divisors is an integer number (94798536).

Almost surely, 2^189597071 is an apocalyptic number.

189597071 is a deficient number, since it is larger than the sum of its proper divisors (1).

189597071 is an equidigital number, since it uses as much as digits as its factorization.

189597071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 47.

The square root of 189597071 is about 13769.4252240244. The cubic root of 189597071 is about 574.4830347843.

The spelling of 189597071 in words is "one hundred eighty-nine million, five hundred ninety-seven thousand, seventy-one".