189520417 has 2 divisors, whose sum is σ = 189520418. Its totient is φ = 189520416.

The previous prime is 189520399. The next prime is 189520439. The reversal of 189520417 is 714025981.

189520417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185395456 + 4124961 = 13616^2 + 2031^2 .

It is an emirp because it is prime and its reverse (714025981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189520417 is a prime.

It is not a weakly prime, because it can be changed into another prime (189520217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94760208 + 94760209.

It is an arithmetic number, because the mean of its divisors is an integer number (94760209).

Almost surely, 2^189520417 is an apocalyptic number.

It is an amenable number.

189520417 is a deficient number, since it is larger than the sum of its proper divisors (1).

189520417 is an equidigital number, since it uses as much as digits as its factorization.

189520417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 189520417 is about 13766.6414567969. The cubic root of 189520417 is about 574.4056032813.

The spelling of 189520417 in words is "one hundred eighty-nine million, five hundred twenty thousand, four hundred seventeen".