19745852860 has 12 divisors (see below), whose sum is σ = 41466291048. Its totient is φ = 7898341136.

The previous prime is 19745852857. The next prime is 19745852879. The reversal of 19745852860 is 6825854791.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493646302 + ... + 493646341.

It is an arithmetic number, because the mean of its divisors is an integer number (3455524254).

Almost surely, 2^19745852860 is an apocalyptic number.

19745852860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19745852860 is an abundant number, since it is smaller than the sum of its proper divisors (21720438188).

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

19745852860 is a wasteful number, since it uses less digits than its factorization.

19745852860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987292652 (or 987292650 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 19745852860 in words is "nineteen billion, seven hundred forty-five million, eight hundred fifty-two thousand, eight hundred sixty".