19820367760 has 40 divisors (see below), whose sum is σ = 48085940160. Its totient is φ = 7583444352.

The previous prime is 19820367757. The next prime is 19820367773. The reversal of 19820367760 is 6776302891.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 5384130 + ... + 5387809.

It is an arithmetic number, because the mean of its divisors is an integer number (1202148504).

Almost surely, 2^19820367760 is an apocalyptic number.

19820367760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19820367760 is an abundant number, since it is smaller than the sum of its proper divisors (28265572400).

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

19820367760 is a wasteful number, since it uses less digits than its factorization.

19820367760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10771975 (or 10771969 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 19820367760 in words is "nineteen billion, eight hundred twenty million, three hundred sixty-seven thousand, seven hundred sixty".