189242549 has 2 divisors, whose sum is σ = 189242550. Its totient is φ = 189242548.

The previous prime is 189242509. The next prime is 189242587. The reversal of 189242549 is 945242981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106977649 + 82264900 = 10343^2 + 9070^2 .

It is a cyclic number.

It is not a de Polignac number, because 189242549 - 2⁸ = 189242293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189242509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94621274 + 94621275.

It is an arithmetic number, because the mean of its divisors is an integer number (94621275).

Almost surely, 2^189242549 is an apocalyptic number.

It is an amenable number.

189242549 is a deficient number, since it is larger than the sum of its proper divisors (1).

189242549 is an equidigital number, since it uses as much as digits as its factorization.

189242549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 44.

The square root of 189242549 is about 13756.5456783307. The cubic root of 189242549 is about 574.1247417140.

The spelling of 189242549 in words is "one hundred eighty-nine million, two hundred forty-two thousand, five hundred forty-nine".