189940577093 has 2 divisors, whose sum is σ = 189940577094. Its totient is φ = 189940577092.

The previous prime is 189940577087. The next prime is 189940577131. The reversal of 189940577093 is 390775049981.

189940577093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117653802049 + 72286775044 = 343007^2 + 268862^2 .

It is an emirp because it is prime and its reverse (390775049981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189940577093 - 2³⁴ = 172760707909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189940577993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94970288546 + 94970288547.

It is an arithmetic number, because the mean of its divisors is an integer number (94970288547).

Almost surely, 2^189940577093 is an apocalyptic number.

It is an amenable number.

189940577093 is a deficient number, since it is larger than the sum of its proper divisors (1).

189940577093 is an equidigital number, since it uses as much as digits as its factorization.

189940577093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17146080, while the sum is 62.

The spelling of 189940577093 in words is "one hundred eighty-nine billion, nine hundred forty million, five hundred seventy-seven thousand, ninety-three".