189428607133793 has 4 divisors (see below), whose sum is σ = 189687036339348. Its totient is φ = 189170177928240.

The previous prime is 189428607133699. The next prime is 189428607133849. The reversal of 189428607133793 is 397331706824981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104865648794449 + 84562958339344 = 10240393^2 + 9195812^2 .

It is a cyclic number.

It is not a de Polignac number, because 189428607133793 - 2¹⁰ = 189428607132769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189428627133793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129214601678 + ... + 129214603143.

It is an arithmetic number, because the mean of its divisors is an integer number (47421759084837).

Almost surely, 2^{189428607133793} is an apocalyptic number.

It is an amenable number.

189428607133793 is a deficient number, since it is larger than the sum of its proper divisors (258429205555).

189428607133793 is an equidigital number, since it uses as much as digits as its factorization.

189428607133793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258429205554.

The product of its (nonzero) digits is 329204736, while the sum is 71.

The spelling of 189428607133793 in words is "one hundred eighty-nine trillion, four hundred twenty-eight billion, six hundred seven million, one hundred thirty-three thousand, seven hundred ninety-three".