19573857341 has 4 divisors (see below), whose sum is σ = 20725260732. Its totient is φ = 18422453952.

The previous prime is 19573857311. The next prime is 19573857349. The reversal of 19573857341 is 14375837591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14375837591 = 23 ⋅625036417.

It can be written as a sum of positive squares in 2 ways, for example, as 8374080100 + 11199777241 = 91510^2 + 105829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19573857341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19573857349) 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, 575701670 + ... + 575701703.

It is an arithmetic number, because the mean of its divisors is an integer number (5181315183).

Almost surely, 2^19573857341 is an apocalyptic number.

It is an amenable number.

19573857341 is a deficient number, since it is larger than the sum of its proper divisors (1151403391).

19573857341 is a wasteful number, since it uses less digits than its factorization.

19573857341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151403390.

The product of its digits is 3175200, while the sum is 53.

The spelling of 19573857341 in words is "nineteen billion, five hundred seventy-three million, eight hundred fifty-seven thousand, three hundred forty-one".