187130987 has 2 divisors, whose sum is σ = 187130988. Its totient is φ = 187130986.

The previous prime is 187130971. The next prime is 187131001. The reversal of 187130987 is 789031781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 187130987 - 2⁴ = 187130971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (187130087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93565493 + 93565494.

It is an arithmetic number, because the mean of its divisors is an integer number (93565494).

Almost surely, 2^187130987 is an apocalyptic number.

187130987 is a deficient number, since it is larger than the sum of its proper divisors (1).

187130987 is an equidigital number, since it uses as much as digits as its factorization.

187130987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 187130987 is about 13679.5828518270. The cubic root of 187130987 is about 571.9813951844.

The spelling of 187130987 in words is "one hundred eighty-seven million, one hundred thirty thousand, nine hundred eighty-seven".