189220230137 has 2 divisors, whose sum is σ = 189220230138. Its totient is φ = 189220230136.

The previous prime is 189220230091. The next prime is 189220230163. The reversal of 189220230137 is 731032022981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96063423481 + 93156806656 = 309941^2 + 305216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189220230137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189220230137.

It is not a weakly prime, because it can be changed into another prime (189220230337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94610115068 + 94610115069.

It is an arithmetic number, because the mean of its divisors is an integer number (94610115069).

Almost surely, 2^189220230137 is an apocalyptic number.

It is an amenable number.

189220230137 is a deficient number, since it is larger than the sum of its proper divisors (1).

189220230137 is an equidigital number, since it uses as much as digits as its factorization.

189220230137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 189220230137 in words is "one hundred eighty-nine billion, two hundred twenty million, two hundred thirty thousand, one hundred thirty-seven".