19400803368 has 16 divisors (see below), whose sum is σ = 48502008480. Its totient is φ = 6466934448.

The previous prime is 19400803363. The next prime is 19400803403. The reversal of 19400803368 is 86330800491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19400803361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404183380 + ... + 404183427.

It is an arithmetic number, because the mean of its divisors is an integer number (3031375530).

Almost surely, 2^19400803368 is an apocalyptic number.

It is an amenable number.

19400803368 is an abundant number, since it is smaller than the sum of its proper divisors (29101205112).

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

19400803368 is a wasteful number, since it uses less digits than its factorization.

19400803368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808366816 (or 808366812 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 19400803368 in words is "nineteen billion, four hundred million, eight hundred three thousand, three hundred sixty-eight".