189354397 has 2 divisors, whose sum is σ = 189354398. Its totient is φ = 189354396.

The previous prime is 189354391. The next prime is 189354401. The reversal of 189354397 is 793453981.

189354397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113507716 + 75846681 = 10654^2 + 8709^2 .

It is an emirp because it is prime and its reverse (793453981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189354397 - 2²³ = 180965789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189354397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189354391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94677198 + 94677199.

It is an arithmetic number, because the mean of its divisors is an integer number (94677199).

Almost surely, 2^189354397 is an apocalyptic number.

It is an amenable number.

189354397 is a deficient number, since it is larger than the sum of its proper divisors (1).

189354397 is an equidigital number, since it uses as much as digits as its factorization.

189354397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 49.

The square root of 189354397 is about 13760.6103425684. The cubic root of 189354397 is about 574.2378277292.

It can be divided in two parts, 18935 and 4397, that added together give a palindrome (23332).

The spelling of 189354397 in words is "one hundred eighty-nine million, three hundred fifty-four thousand, three hundred ninety-seven".