19698444467 has 24 divisors (see below), whose sum is σ = 21936810240. Its totient is φ = 17667486720.

The previous prime is 19698444457. The next prime is 19698444473. The reversal of 19698444467 is 76444489691.

It is not a de Polignac number, because 19698444467 - 2¹² = 19698440371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19698444457) 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 23 ways as a sum of consecutive naturals, for example, 5807342 + ... + 5810732.

It is an arithmetic number, because the mean of its divisors is an integer number (914033760).

Almost surely, 2^19698444467 is an apocalyptic number.

19698444467 is a deficient number, since it is larger than the sum of its proper divisors (2238365773).

19698444467 is a wasteful number, since it uses less digits than its factorization.

19698444467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383 (or 4370 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 62.

The spelling of 19698444467 in words is "nineteen billion, six hundred ninety-eight million, four hundred forty-four thousand, four hundred sixty-seven".