189132397 has 2 divisors, whose sum is σ = 189132398. Its totient is φ = 189132396.

The previous prime is 189132373. The next prime is 189132401. The reversal of 189132397 is 793231981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144696841 + 44435556 = 12029^2 + 6666^2 .

It is a cyclic number.

It is not a de Polignac number, because 189132397 - 2¹⁹ = 188608109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189832397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94566198 + 94566199.

It is an arithmetic number, because the mean of its divisors is an integer number (94566199).

Almost surely, 2^189132397 is an apocalyptic number.

It is an amenable number.

189132397 is a deficient number, since it is larger than the sum of its proper divisors (1).

189132397 is an equidigital number, since it uses as much as digits as its factorization.

189132397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 189132397 is about 13752.5414742149. The cubic root of 189132397 is about 574.0133269132.

The spelling of 189132397 in words is "one hundred eighty-nine million, one hundred thirty-two thousand, three hundred ninety-seven".