189296685257 has 2 divisors, whose sum is σ = 189296685258. Its totient is φ = 189296685256.

The previous prime is 189296685223. The next prime is 189296685293. The reversal of 189296685257 is 752586692981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133759164361 + 55537520896 = 365731^2 + 235664^2 .

It is a cyclic number.

It is not a de Polignac number, because 189296685257 - 2²⁰ = 189295636681 is a prime.

It is not a weakly prime, because it can be changed into another prime (189296685217) 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, 94648342628 + 94648342629.

It is an arithmetic number, because the mean of its divisors is an integer number (94648342629).

Almost surely, 2^189296685257 is an apocalyptic number.

It is an amenable number.

189296685257 is a deficient number, since it is larger than the sum of its proper divisors (1).

189296685257 is an equidigital number, since it uses as much as digits as its factorization.

189296685257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130636800, while the sum is 68.

The spelling of 189296685257 in words is "one hundred eighty-nine billion, two hundred ninety-six million, six hundred eighty-five thousand, two hundred fifty-seven".