1230186887 has 2 divisors, whose sum is σ = 1230186888. Its totient is φ = 1230186886.

The previous prime is 1230186877. The next prime is 1230186889. The reversal of 1230186887 is 7886810321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1230186887 - 2⁶ = 1230186823 is a prime.

Together with 1230186889, 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 (1230186889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615093443 + 615093444.

It is an arithmetic number, because the mean of its divisors is an integer number (615093444).

Almost surely, 2^1230186887 is an apocalyptic number.

1230186887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230186887 is an equidigital number, since it uses as much as digits as its factorization.

1230186887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 1230186887 is about 35074.0201146090. The cubic root of 1230186887 is about 1071.4955321038.

The spelling of 1230186887 in words is "one billion, two hundred thirty million, one hundred eighty-six thousand, eight hundred eighty-seven".