189163057 has 2 divisors, whose sum is σ = 189163058. Its totient is φ = 189163056.

The previous prime is 189163033. The next prime is 189163061. The reversal of 189163057 is 750361981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99121936 + 90041121 = 9956^2 + 9489^2 .

It is a cyclic number.

It is not a de Polignac number, because 189163057 - 2¹⁵ = 189130289 is a prime.

It is not a weakly prime, because it can be changed into another prime (189163067) 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, 94581528 + 94581529.

It is an arithmetic number, because the mean of its divisors is an integer number (94581529).

Almost surely, 2^189163057 is an apocalyptic number.

It is an amenable number.

189163057 is a deficient number, since it is larger than the sum of its proper divisors (1).

189163057 is an equidigital number, since it uses as much as digits as its factorization.

189163057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 189163057 is about 13753.6561320981. The cubic root of 189163057 is about 574.0443427483.

The spelling of 189163057 in words is "one hundred eighty-nine million, one hundred sixty-three thousand, fifty-seven".