1966236782 has 8 divisors (see below), whose sum is σ = 2949550896. Its totient is φ = 983053152.

The previous prime is 1966236781. The next prime is 1966236799. The reversal of 1966236782 is 2876326691.

It is a happy number.

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 1966236782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966236781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26438 + ... + 68054.

It is an arithmetic number, because the mean of its divisors is an integer number (368693862).

Almost surely, 2^1966236782 is an apocalyptic number.

1966236782 is a deficient number, since it is larger than the sum of its proper divisors (983314114).

1966236782 is a wasteful number, since it uses less digits than its factorization.

1966236782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65242.

The product of its digits is 1306368, while the sum is 50.

The square root of 1966236782 is about 44342.2685707441. The cubic root of 1966236782 is about 1252.7909440273.

The spelling of 1966236782 in words is "one billion, nine hundred sixty-six million, two hundred thirty-six thousand, seven hundred eighty-two".