189793073 has 2 divisors, whose sum is σ = 189793074. Its totient is φ = 189793072.

The previous prime is 189793063. The next prime is 189793103. The reversal of 189793073 is 370397981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103897249 + 85895824 = 10193^2 + 9268^2 .

It is an emirp because it is prime and its reverse (370397981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189793073 - 2⁴ = 189793057 is a prime.

It is not a weakly prime, because it can be changed into another prime (189793063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94896536 + 94896537.

It is an arithmetic number, because the mean of its divisors is an integer number (94896537).

Almost surely, 2^189793073 is an apocalyptic number.

It is an amenable number.

189793073 is a deficient number, since it is larger than the sum of its proper divisors (1).

189793073 is an equidigital number, since it uses as much as digits as its factorization.

189793073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 189793073 is about 13776.5406760914. The cubic root of 189793073 is about 574.6809299737.

The spelling of 189793073 in words is "one hundred eighty-nine million, seven hundred ninety-three thousand, seventy-three".