189852961 has 2 divisors, whose sum is σ = 189852962. Its totient is φ = 189852960.

The previous prime is 189852953. The next prime is 189852977. The reversal of 189852961 is 169258981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139712400 + 50140561 = 11820^2 + 7081^2 .

It is an emirp because it is prime and its reverse (169258981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189852961 - 2³ = 189852953 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (189852911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94926480 + 94926481.

It is an arithmetic number, because the mean of its divisors is an integer number (94926481).

Almost surely, 2^189852961 is an apocalyptic number.

It is an amenable number.

189852961 is a deficient number, since it is larger than the sum of its proper divisors (1).

189852961 is an equidigital number, since it uses as much as digits as its factorization.

189852961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 49.

The square root of 189852961 is about 13778.7140546569. The cubic root of 189852961 is about 574.7413692575.

The spelling of 189852961 in words is "one hundred eighty-nine million, eight hundred fifty-two thousand, nine hundred sixty-one".