19049335820 has 12 divisors (see below), whose sum is σ = 40003605264. Its totient is φ = 7619734320.

The previous prime is 19049335817. The next prime is 19049335831. The reversal of 19049335820 is 2853394091.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476233376 + ... + 476233415.

It is an arithmetic number, because the mean of its divisors is an integer number (3333633772).

Almost surely, 2^19049335820 is an apocalyptic number.

19049335820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19049335820 is an abundant number, since it is smaller than the sum of its proper divisors (20954269444).

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

19049335820 is a wasteful number, since it uses less digits than its factorization.

19049335820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952466800 (or 952466798 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 19049335820 in words is "nineteen billion, forty-nine million, three hundred thirty-five thousand, eight hundred twenty".