189395849 has 2 divisors, whose sum is σ = 189395850. Its totient is φ = 189395848.

The previous prime is 189395821. The next prime is 189395863. The reversal of 189395849 is 948593981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159769600 + 29626249 = 12640^2 + 5443^2 .

It is a cyclic number.

It is not a de Polignac number, because 189395849 - 2¹⁶ = 189330313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189395794 and 189395803.

It is not a weakly prime, because it can be changed into another prime (189395449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94697924 + 94697925.

It is an arithmetic number, because the mean of its divisors is an integer number (94697925).

Almost surely, 2^189395849 is an apocalyptic number.

It is an amenable number.

189395849 is a deficient number, since it is larger than the sum of its proper divisors (1).

189395849 is an equidigital number, since it uses as much as digits as its factorization.

189395849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 56.

The square root of 189395849 is about 13762.1164433382. The cubic root of 189395849 is about 574.2797272398.

The spelling of 189395849 in words is "one hundred eighty-nine million, three hundred ninety-five thousand, eight hundred forty-nine".