19938048050 has 54 divisors (see below), whose sum is σ = 39176602749. Its totient is φ = 7548282000.

The previous prime is 19938048037. The next prime is 19938048059. The reversal of 19938048050 is 5084083991.

It can be written as a sum of positive squares in 2 ways, for example, as 19539287089 + 398760961 = 139783^2 + 19969^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=99845.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19938047986 and 19938048004.

It is not an unprimeable number, because it can be changed into a prime (19938048059) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18970025 + ... + 18971075.

Almost surely, 2^19938048050 is an apocalyptic number.

19938048050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19938048050 is a deficient number, since it is larger than the sum of its proper divisors (19238554699).

19938048050 is an equidigital number, since it uses as much as digits as its factorization.

19938048050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 19938048050 in words is "nineteen billion, nine hundred thirty-eight million, forty-eight thousand, fifty".