19804958966 has 8 divisors (see below), whose sum is σ = 31992626064. Its totient is φ = 9140750280.

The previous prime is 19804958947. The next prime is 19804958977. The reversal of 19804958966 is 66985940891.

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

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, 380864570 + ... + 380864621.

It is an arithmetic number, because the mean of its divisors is an integer number (3999078258).

Almost surely, 2^19804958966 is an apocalyptic number.

19804958966 is a deficient number, since it is larger than the sum of its proper divisors (12187667098).

19804958966 is a wasteful number, since it uses less digits than its factorization.

19804958966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761729206.

The product of its (nonzero) digits is 33592320, while the sum is 65.

The spelling of 19804958966 in words is "nineteen billion, eight hundred four million, nine hundred fifty-eight thousand, nine hundred sixty-six".