1966485019 has 2 divisors, whose sum is σ = 1966485020. Its totient is φ = 1966485018.

The previous prime is 1966485011. The next prime is 1966485061. The reversal of 1966485019 is 9105846691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1966485019 - 2³ = 1966485011 is a prime.

It is a super-2 number, since 2×1966485019² = 7734126659902860722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1966485011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983242509 + 983242510.

It is an arithmetic number, because the mean of its divisors is an integer number (983242510).

Almost surely, 2^1966485019 is an apocalyptic number.

1966485019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966485019 is an equidigital number, since it uses as much as digits as its factorization.

1966485019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 1966485019 is about 44345.0675836671. The cubic root of 1966485019 is about 1252.8436633441.

The spelling of 1966485019 in words is "one billion, nine hundred sixty-six million, four hundred eighty-five thousand, nineteen".