189531337 has 2 divisors, whose sum is σ = 189531338. Its totient is φ = 189531336.

The previous prime is 189531313. The next prime is 189531341. The reversal of 189531337 is 733135981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180069561 + 9461776 = 13419^2 + 3076^2 .

It is a cyclic number.

It is not a de Polignac number, because 189531337 - 2¹¹ = 189529289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189531337.

It is not a weakly prime, because it can be changed into another prime (189531367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94765668 + 94765669.

It is an arithmetic number, because the mean of its divisors is an integer number (94765669).

Almost surely, 2^189531337 is an apocalyptic number.

It is an amenable number.

189531337 is a deficient number, since it is larger than the sum of its proper divisors (1).

189531337 is an equidigital number, since it uses as much as digits as its factorization.

189531337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 189531337 is about 13767.0380619798. The cubic root of 189531337 is about 574.4166353182.

The spelling of 189531337 in words is "one hundred eighty-nine million, five hundred thirty-one thousand, three hundred thirty-seven".