187106849 has 2 divisors, whose sum is σ = 187106850. Its totient is φ = 187106848.

The previous prime is 187106833. The next prime is 187106867. The reversal of 187106849 is 948601781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183331600 + 3775249 = 13540^2 + 1943^2 .

It is a cyclic number.

It is not a de Polignac number, because 187106849 - 2⁴ = 187106833 is a prime.

It is not a weakly prime, because it can be changed into another prime (187102849) 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, 93553424 + 93553425.

It is an arithmetic number, because the mean of its divisors is an integer number (93553425).

Almost surely, 2^187106849 is an apocalyptic number.

It is an amenable number.

187106849 is a deficient number, since it is larger than the sum of its proper divisors (1).

187106849 is an equidigital number, since it uses as much as digits as its factorization.

187106849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 187106849 is about 13678.7005596292. The cubic root of 187106849 is about 571.9568008600.

The spelling of 187106849 in words is "one hundred eighty-seven million, one hundred six thousand, eight hundred forty-nine".