189729027793 has 2 divisors, whose sum is σ = 189729027794. Its totient is φ = 189729027792.

The previous prime is 189729027751. The next prime is 189729027827. The reversal of 189729027793 is 397720927981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118606538449 + 71122489344 = 344393^2 + 266688^2 .

It is a cyclic number.

It is not a de Polignac number, because 189729027793 - 2⁹ = 189729027281 is a prime.

It is not a weakly prime, because it can be changed into another prime (189729627793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94864513896 + 94864513897.

It is an arithmetic number, because the mean of its divisors is an integer number (94864513897).

Almost surely, 2^189729027793 is an apocalyptic number.

It is an amenable number.

189729027793 is a deficient number, since it is larger than the sum of its proper divisors (1).

189729027793 is an equidigital number, since it uses as much as digits as its factorization.

189729027793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24004512, while the sum is 64.

The spelling of 189729027793 in words is "one hundred eighty-nine billion, seven hundred twenty-nine million, twenty-seven thousand, seven hundred ninety-three".