1966467887 has 2 divisors, whose sum is σ = 1966467888. Its totient is φ = 1966467886.

The previous prime is 1966467799. The next prime is 1966467907. The reversal of 1966467887 is 7887646691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1966467887 - 2¹⁸ = 1966205743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1966467287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983233943 + 983233944.

It is an arithmetic number, because the mean of its divisors is an integer number (983233944).

Almost surely, 2^1966467887 is an apocalyptic number.

1966467887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966467887 is an equidigital number, since it uses as much as digits as its factorization.

1966467887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 62.

The square root of 1966467887 is about 44344.8744163291. The cubic root of 1966467887 is about 1252.8400250792.

The spelling of 1966467887 in words is "one billion, nine hundred sixty-six million, four hundred sixty-seven thousand, eight hundred eighty-seven".