194976648709 has 16 divisors (see below), whose sum is σ = 196783372800. Its totient is φ = 193181000256.

The previous prime is 194976648707. The next prime is 194976648719. The reversal of 194976648709 is 907846679491.

It is a cyclic number.

It is not a de Polignac number, because 194976648709 - 2¹ = 194976648707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194976648707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39715747 + ... + 39720655.

It is an arithmetic number, because the mean of its divisors is an integer number (12298960800).

Almost surely, 2^194976648709 is an apocalyptic number.

It is an amenable number.

194976648709 is a deficient number, since it is larger than the sum of its proper divisors (1806724091).

194976648709 is a wasteful number, since it uses less digits than its factorization.

194976648709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5964.

The product of its (nonzero) digits is 164602368, while the sum is 70.

The spelling of 194976648709 in words is "one hundred ninety-four billion, nine hundred seventy-six million, six hundred forty-eight thousand, seven hundred nine".