189320427161 has 2 divisors, whose sum is σ = 189320427162. Its totient is φ = 189320427160.

The previous prime is 189320427151. The next prime is 189320427181. The reversal of 189320427161 is 161724023981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177931268761 + 11389158400 = 421819^2 + 106720^2 .

It is a cyclic number.

It is not a de Polignac number, because 189320427161 - 2¹⁴ = 189320410777 is a prime.

It is not a weakly prime, because it can be changed into another prime (189320427151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94660213580 + 94660213581.

It is an arithmetic number, because the mean of its divisors is an integer number (94660213581).

Almost surely, 2^189320427161 is an apocalyptic number.

It is an amenable number.

189320427161 is a deficient number, since it is larger than the sum of its proper divisors (1).

189320427161 is an equidigital number, since it uses as much as digits as its factorization.

189320427161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 189320427161 in words is "one hundred eighty-nine billion, three hundred twenty million, four hundred twenty-seven thousand, one hundred sixty-one".