19944100396 has 18 divisors (see below), whose sum is σ = 38363549420. Its totient is φ = 9065499960.

The previous prime is 19944100373. The next prime is 19944100411. The reversal of 19944100396 is 69300144991.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20602926 + ... + 20603893.

Almost surely, 2^19944100396 is an apocalyptic number.

It is an amenable number.

19944100396 is a deficient number, since it is larger than the sum of its proper divisors (18419449024).

19944100396 is a wasteful number, since it uses less digits than its factorization.

19944100396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41206845 (or 41206832 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 19944100396 in words is "nineteen billion, nine hundred forty-four million, one hundred thousand, three hundred ninety-six".