189525474169 has 2 divisors, whose sum is σ = 189525474170. Its totient is φ = 189525474168.

The previous prime is 189525474157. The next prime is 189525474217. The reversal of 189525474169 is 961474525981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186861675625 + 2663798544 = 432275^2 + 51612^2 .

It is an emirp because it is prime and its reverse (961474525981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189525474169 - 2⁵ = 189525474137 is a prime.

It is a super-2 number, since 2×189525474169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (189525474119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94762737084 + 94762737085.

It is an arithmetic number, because the mean of its divisors is an integer number (94762737085).

Almost surely, 2^189525474169 is an apocalyptic number.

It is an amenable number.

189525474169 is a deficient number, since it is larger than the sum of its proper divisors (1).

189525474169 is an equidigital number, since it uses as much as digits as its factorization.

189525474169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 61.

The spelling of 189525474169 in words is "one hundred eighty-nine billion, five hundred twenty-five million, four hundred seventy-four thousand, one hundred sixty-nine".