19499018300 has 18 divisors (see below), whose sum is σ = 42312869928. Its totient is φ = 7799607280.

The previous prime is 19499018267. The next prime is 19499018327. The reversal of 19499018300 is 381099491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97494992 + ... + 97495191.

It is an arithmetic number, because the mean of its divisors is an integer number (2350714996).

Almost surely, 2^19499018300 is an apocalyptic number.

19499018300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19499018300 is an abundant number, since it is smaller than the sum of its proper divisors (22813851628).

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

19499018300 is a wasteful number, since it uses less digits than its factorization.

19499018300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194990197 (or 194990190 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 19499018300 in words is "nineteen billion, four hundred ninety-nine million, eighteen thousand, three hundred".