189276149 has 2 divisors, whose sum is σ = 189276150. Its totient is φ = 189276148.

The previous prime is 189276137. The next prime is 189276151. The reversal of 189276149 is 941672981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141181924 + 48094225 = 11882^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 189276149 - 2⁴ = 189276133 is a prime.

It is a Sophie Germain prime.

Together with 189276151, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189276169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94638074 + 94638075.

It is an arithmetic number, because the mean of its divisors is an integer number (94638075).

Almost surely, 2^189276149 is an apocalyptic number.

It is an amenable number.

189276149 is a deficient number, since it is larger than the sum of its proper divisors (1).

189276149 is an equidigital number, since it uses as much as digits as its factorization.

189276149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 47.

The square root of 189276149 is about 13757.7668609408. The cubic root of 189276149 is about 574.1587183045.

The spelling of 189276149 in words is "one hundred eighty-nine million, two hundred seventy-six thousand, one hundred forty-nine".