1966907563 has 2 divisors, whose sum is σ = 1966907564. Its totient is φ = 1966907562.

The previous prime is 1966907483. The next prime is 1966907567. The reversal of 1966907563 is 3657096691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1966907563 - 2⁹ = 1966907051 is a prime.

It is a super-2 number, since 2×1966907563² = 7737450722773197938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1966907563.

It is not a weakly prime, because it can be changed into another prime (1966907567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983453781 + 983453782.

It is an arithmetic number, because the mean of its divisors is an integer number (983453782).

Almost surely, 2^1966907563 is an apocalyptic number.

1966907563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966907563 is an equidigital number, since it uses as much as digits as its factorization.

1966907563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 1966907563 is about 44349.8316005822. The cubic root of 1966907563 is about 1252.9333908962.

The spelling of 1966907563 in words is "one billion, nine hundred sixty-six million, nine hundred seven thousand, five hundred sixty-three".