19795297788 has 54 divisors (see below), whose sum is σ = 57192868824. Its totient is φ = 5655161232.

The previous prime is 19795297751. The next prime is 19795297793. The reversal of 19795297788 is 88779259791.

19795297788 is a `hidden beast` number, since 1 + 97 + 9 + 529 + 7 + 7 + 8 + 8 = 666.

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 17 ways as a sum of consecutive naturals, for example, 2229045 + ... + 2237907.

Almost surely, 2^19795297788 is an apocalyptic number.

19795297788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19795297788 is an abundant number, since it is smaller than the sum of its proper divisors (37397571036).

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

19795297788 is an frugal number, since it uses more digits than its factorization.

19795297788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17743 (or 8875 counting only the distinct ones).

The product of its digits is 160030080, while the sum is 72.

The spelling of 19795297788 in words is "nineteen billion, seven hundred ninety-five million, two hundred ninety-seven thousand, seven hundred eighty-eight".