187089349 has 2 divisors, whose sum is σ = 187089350. Its totient is φ = 187089348.

The previous prime is 187089347. The next prime is 187089359. The reversal of 187089349 is 943980781.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158004900 + 29084449 = 12570^2 + 5393^2 .

It is a cyclic number.

It is not a de Polignac number, because 187089349 - 2¹ = 187089347 is a prime.

Together with 187089347, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187089347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93544674 + 93544675.

It is an arithmetic number, because the mean of its divisors is an integer number (93544675).

Almost surely, 2^187089349 is an apocalyptic number.

It is an amenable number.

187089349 is a deficient number, since it is larger than the sum of its proper divisors (1).

187089349 is an equidigital number, since it uses as much as digits as its factorization.

187089349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 187089349 is about 13678.0608640260. The cubic root of 187089349 is about 571.9389687031.

It can be divided in two parts, 1870 and 89349, that added together give a palindrome (91219).

The spelling of 187089349 in words is "one hundred eighty-seven million, eighty-nine thousand, three hundred forty-nine".