19353668620 has 48 divisors (see below), whose sum is σ = 47748079008. Its totient is φ = 6496335360.

The previous prime is 19353668563. The next prime is 19353668623. The reversal of 19353668620 is 2686635391.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (19353668623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3380649 + ... + 3386368.

It is an arithmetic number, because the mean of its divisors is an integer number (994751646).

Almost surely, 2^19353668620 is an apocalyptic number.

19353668620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19353668620 is an abundant number, since it is smaller than the sum of its proper divisors (28394410388).

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

19353668620 is a wasteful number, since it uses less digits than its factorization.

19353668620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767050 (or 6767048 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 19353668620 in words is "nineteen billion, three hundred fifty-three million, six hundred sixty-eight thousand, six hundred twenty".