19983379401 has 8 divisors (see below), whose sum is σ = 29605006560. Its totient is φ = 13322252916.

The previous prime is 19983379373. The next prime is 19983379439. The reversal of 19983379401 is 10497338991.

It is a happy number.

19983379401 is a `hidden beast` number, since 1 + 99 + 83 + 3 + 79 + 401 = 666.

It is not a de Polignac number, because 19983379401 - 2¹¹ = 19983377353 is a prime.

It is a super-2 number, since 2×19983379401² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19983379901) 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 7 ways as a sum of consecutive naturals, for example, 370062555 + ... + 370062608.

It is an arithmetic number, because the mean of its divisors is an integer number (3700625820).

Almost surely, 2^19983379401 is an apocalyptic number.

It is an amenable number.

19983379401 is a deficient number, since it is larger than the sum of its proper divisors (9621627159).

19983379401 is an equidigital number, since it uses as much as digits as its factorization.

19983379401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740125172 (or 740125166 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 19983379401 in words is "nineteen billion, nine hundred eighty-three million, three hundred seventy-nine thousand, four hundred one".