19742853580 has 24 divisors (see below), whose sum is σ = 41786454528. Its totient is φ = 7834958208.

The previous prime is 19742853553. The next prime is 19742853601. The reversal of 19742853580 is 8535824791.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3883849 + ... + 3888928.

It is an arithmetic number, because the mean of its divisors is an integer number (1741102272).

Almost surely, 2^19742853580 is an apocalyptic number.

19742853580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19742853580 is an abundant number, since it is smaller than the sum of its proper divisors (22043600948).

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

19742853580 is a wasteful number, since it uses less digits than its factorization.

19742853580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7772913 (or 7772911 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 19742853580 in words is "nineteen billion, seven hundred forty-two million, eight hundred fifty-three thousand, five hundred eighty".