19814609900 has 36 divisors (see below), whose sum is σ = 43015189560. Its totient is φ = 7922620800.

The previous prime is 19814609897. The next prime is 19814609939. The reversal of 19814609900 is 990641891.

It is a super-3 number, since 3×19814609900³ (a number of 32 digits) contains 333 as substring.

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 11 ways as a sum of consecutive naturals, for example, 214880 + ... + 292920.

Almost surely, 2^19814609900 is an apocalyptic number.

19814609900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19814609900 is an abundant number, since it is smaller than the sum of its proper divisors (23200579660).

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

19814609900 is a wasteful number, since it uses less digits than its factorization.

19814609900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80594 (or 80587 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 19814609900 in words is "nineteen billion, eight hundred fourteen million, six hundred nine thousand, nine hundred".