1966194075 has 48 divisors (see below), whose sum is σ = 3448681056. Its totient is φ = 985036800.

The previous prime is 1966194071. The next prime is 1966194121. The reversal of 1966194075 is 5704916691.

It is a happy number.

It is not a de Polignac number, because 1966194075 - 2² = 1966194071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1966194071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 841609 + ... + 843941.

It is an arithmetic number, because the mean of its divisors is an integer number (71847522).

Almost surely, 2^1966194075 is an apocalyptic number.

1966194075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1966194075 is a deficient number, since it is larger than the sum of its proper divisors (1482486981).

1966194075 is a wasteful number, since it uses less digits than its factorization.

1966194075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024 (or 3019 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 1966194075 is about 44341.7870072914. The cubic root of 1966194075 is about 1252.7818736836.

The spelling of 1966194075 in words is "one billion, nine hundred sixty-six million, one hundred ninety-four thousand, seventy-five".