1966304871 has 24 divisors (see below), whose sum is σ = 2869495200. Its totient is φ = 1297429056.

The previous prime is 1966304861. The next prime is 1966304897. The reversal of 1966304871 is 1784036691.

It is a happy number.

1966304871 is a `hidden beast` number, since 1 + 9 + 6 + 630 + 4 + 8 + 7 + 1 = 666.

It is not a de Polignac number, because 1966304871 - 2⁵ = 1966304839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966304861) 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 23 ways as a sum of consecutive naturals, for example, 350041 + ... + 355613.

It is an arithmetic number, because the mean of its divisors is an integer number (119562300).

Almost surely, 2^1966304871 is an apocalyptic number.

1966304871 is a deficient number, since it is larger than the sum of its proper divisors (903190329).

1966304871 is a wasteful number, since it uses less digits than its factorization.

1966304871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975 (or 5972 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1966304871 is about 44343.0363304093. The cubic root of 1966304871 is about 1252.8054048659.

The spelling of 1966304871 in words is "one billion, nine hundred sixty-six million, three hundred four thousand, eight hundred seventy-one".