1330986187 has 2 divisors, whose sum is σ = 1330986188. Its totient is φ = 1330986186.

The previous prime is 1330986169. The next prime is 1330986203. The reversal of 1330986187 is 7816890331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1330986187 - 2²³ = 1322597579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1330986127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665493093 + 665493094.

It is an arithmetic number, because the mean of its divisors is an integer number (665493094).

Almost surely, 2^1330986187 is an apocalyptic number.

1330986187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1330986187 is an equidigital number, since it uses as much as digits as its factorization.

1330986187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1330986187 is about 36482.6833854090. The cubic root of 1330986187 is about 1099.9961947527.

The spelling of 1330986187 in words is "one billion, three hundred thirty million, nine hundred eighty-six thousand, one hundred eighty-seven".