19806348804 has 48 divisors (see below), whose sum is σ = 51054366720. Its totient is φ = 5925947040.

The previous prime is 19806348767. The next prime is 19806348827. The reversal of 19806348804 is 40884360891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 939244 + ... + 960099.

It is an arithmetic number, because the mean of its divisors is an integer number (1063632640).

Almost surely, 2^19806348804 is an apocalyptic number.

It is an amenable number.

19806348804 is an abundant number, since it is smaller than the sum of its proper divisors (31248017916).

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

19806348804 is a wasteful number, since it uses less digits than its factorization.

19806348804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899440 (or 1899438 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 19806348804 in words is "nineteen billion, eight hundred six million, three hundred forty-eight thousand, eight hundred four".