19108420200 has 72 divisors (see below), whose sum is σ = 64172450550. Its totient is φ = 5095578240.

The previous prime is 19108420153. The next prime is 19108420241. The reversal of 19108420200 is 202480191.

It can be written as a sum of positive squares in 3 ways, for example, as 18666663876 + 441756324 = 136626^2 + 21018^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5306095 + ... + 5309694.

Almost surely, 2^19108420200 is an apocalyptic number.

19108420200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19108420200 is an abundant number, since it is smaller than the sum of its proper divisors (45064030350).

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

19108420200 is a wasteful number, since it uses less digits than its factorization.

19108420200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10615811 (or 10615799 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 19108420200 in words is "nineteen billion, one hundred eight million, four hundred twenty thousand, two hundred".