19706381241 has 4 divisors (see below), whose sum is σ = 26275174992. Its totient is φ = 13137587492.

The previous prime is 19706381237. The next prime is 19706381267. The reversal of 19706381241 is 14218360791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19706381241 - 2² = 19706381237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19706381193 and 19706381202.

It is not an unprimeable number, because it can be changed into a prime (19706381941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3284396871 + ... + 3284396876.

It is an arithmetic number, because the mean of its divisors is an integer number (6568793748).

Almost surely, 2^19706381241 is an apocalyptic number.

It is an amenable number.

19706381241 is a deficient number, since it is larger than the sum of its proper divisors (6568793751).

19706381241 is an equidigital number, since it uses as much as digits as its factorization.

19706381241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6568793750.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 19706381241 in words is "nineteen billion, seven hundred six million, three hundred eighty-one thousand, two hundred forty-one".