189428607133849 has 2 divisors, whose sum is σ = 189428607133850. Its totient is φ = 189428607133848.

The previous prime is 189428607133699. The next prime is 189428607133853. The reversal of 189428607133849 is 948331706824981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189416865894400 + 11741239449 = 13762880^2 + 108357^2 .

It is a cyclic number.

It is not a de Polignac number, because 189428607133849 - 2⁴⁷ = 48691118778521 is a prime.

It is not a weakly prime, because it can be changed into another prime (189428607103849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94714303566924 + 94714303566925.

It is an arithmetic number, because the mean of its divisors is an integer number (94714303566925).

Almost surely, 2^{189428607133849} is an apocalyptic number.

It is an amenable number.

189428607133849 is a deficient number, since it is larger than the sum of its proper divisors (1).

189428607133849 is an equidigital number, since it uses as much as digits as its factorization.

189428607133849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 501645312, while the sum is 73.

The spelling of 189428607133849 in words is "one hundred eighty-nine trillion, four hundred twenty-eight billion, six hundred seven million, one hundred thirty-three thousand, eight hundred forty-nine".