19244094857 has 8 divisors (see below), whose sum is σ = 20725608960. Its totient is φ = 17762752080.

The previous prime is 19244094817. The next prime is 19244094923. The reversal of 19244094857 is 75849044291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19244094857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19244094799 and 19244094808.

It is not an unprimeable number, because it can be changed into a prime (19244094817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281432 + ... + 343062.

It is an arithmetic number, because the mean of its divisors is an integer number (2590701120).

Almost surely, 2^19244094857 is an apocalyptic number.

It is an amenable number.

19244094857 is a deficient number, since it is larger than the sum of its proper divisors (1481514103).

19244094857 is a wasteful number, since it uses less digits than its factorization.

19244094857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85663.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 19244094857 in words is "nineteen billion, two hundred forty-four million, ninety-four thousand, eight hundred fifty-seven".