19646612230 has 24 divisors (see below), whose sum is σ = 41137601328. Its totient is φ = 6735981168.

The previous prime is 19646612221. The next prime is 19646612243. The reversal of 19646612230 is 3221664691.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 20047074 + ... + 20048053.

It is an arithmetic number, because the mean of its divisors is an integer number (1714066722).

Almost surely, 2^19646612230 is an apocalyptic number.

19646612230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19646612230 is an abundant number, since it is smaller than the sum of its proper divisors (21490989098).

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

19646612230 is a wasteful number, since it uses less digits than its factorization.

19646612230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40095148 (or 40095141 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 19646612230 in words is "nineteen billion, six hundred forty-six million, six hundred twelve thousand, two hundred thirty".