19573857340 has 24 divisors (see below), whose sum is σ = 41116723200. Its totient is φ = 7827329088.

The previous prime is 19573857311. The next prime is 19573857349. The reversal of 19573857340 is 4375837591.

It is a super-4 number, since 4×19573857340⁴ (a number of 42 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

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 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, 64915 + ... + 208234.

It is an arithmetic number, because the mean of its divisors is an integer number (1713196800).

Almost surely, 2^19573857340 is an apocalyptic number.

19573857340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19573857340 is an abundant number, since it is smaller than the sum of its proper divisors (21542865860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19573857340 is a wasteful number, since it uses less digits than its factorization.

19573857340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276741 (or 276739 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 19573857340 in words is "nineteen billion, five hundred seventy-three million, eight hundred fifty-seven thousand, three hundred forty".