189153641 has 2 divisors, whose sum is σ = 189153642. Its totient is φ = 189153640.

The previous prime is 189153593. The next prime is 189153659. The reversal of 189153641 is 146351981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96609241 + 92544400 = 9829^2 + 9620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189153641 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189153595 and 189153604.

It is not a weakly prime, because it can be changed into another prime (189143641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94576820 + 94576821.

It is an arithmetic number, because the mean of its divisors is an integer number (94576821).

Almost surely, 2^189153641 is an apocalyptic number.

It is an amenable number.

189153641 is a deficient number, since it is larger than the sum of its proper divisors (1).

189153641 is an equidigital number, since it uses as much as digits as its factorization.

189153641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 38.

The square root of 189153641 is about 13753.3138188583. The cubic root of 189153641 is about 574.0348178243.

The spelling of 189153641 in words is "one hundred eighty-nine million, one hundred fifty-three thousand, six hundred forty-one".