1966467878 has 8 divisors (see below), whose sum is σ = 2949976560. Its totient is φ = 983142360.

The previous prime is 1966467799. The next prime is 1966467887. The reversal of 1966467878 is 8787646691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1966467878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14738 + ... + 64421.

It is an arithmetic number, because the mean of its divisors is an integer number (368747070).

Almost surely, 2^1966467878 is an apocalyptic number.

1966467878 is a deficient number, since it is larger than the sum of its proper divisors (983508682).

1966467878 is a wasteful number, since it uses less digits than its factorization.

1966467878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91582.

The product of its digits is 24385536, while the sum is 62.

The square root of 1966467878 is about 44344.8743148518. The cubic root of 1966467878 is about 1252.8400231679.

The spelling of 1966467878 in words is "one billion, nine hundred sixty-six million, four hundred sixty-seven thousand, eight hundred seventy-eight".