1966295663 has 2 divisors, whose sum is σ = 1966295664. Its totient is φ = 1966295662.

The previous prime is 1966295659. The next prime is 1966295677. The reversal of 1966295663 is 3665926691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1966295663 - 2² = 1966295659 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1966295263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983147831 + 983147832.

It is an arithmetic number, because the mean of its divisors is an integer number (983147832).

Almost surely, 2^1966295663 is an apocalyptic number.

1966295663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966295663 is an equidigital number, since it uses as much as digits as its factorization.

1966295663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280, while the sum is 53.

The square root of 1966295663 is about 44342.9325033877. The cubic root of 1966295663 is about 1252.8034492773.

The spelling of 1966295663 in words is "one billion, nine hundred sixty-six million, two hundred ninety-five thousand, six hundred sixty-three".