189273853 has 2 divisors, whose sum is σ = 189273854. Its totient is φ = 189273852.

The previous prime is 189273803. The next prime is 189273881. The reversal of 189273853 is 358372981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164403684 + 24870169 = 12822^2 + 4987^2 .

It is a cyclic number.

It is not a de Polignac number, because 189273853 - 2⁹ = 189273341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189273803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94636926 + 94636927.

It is an arithmetic number, because the mean of its divisors is an integer number (94636927).

Almost surely, 2^189273853 is an apocalyptic number.

It is an amenable number.

189273853 is a deficient number, since it is larger than the sum of its proper divisors (1).

189273853 is an equidigital number, since it uses as much as digits as its factorization.

189273853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 189273853 is about 13757.6834169129. The cubic root of 189273853 is about 574.1563966988.

The spelling of 189273853 in words is "one hundred eighty-nine million, two hundred seventy-three thousand, eight hundred fifty-three".