19400403649382 has 16 divisors (see below), whose sum is σ = 33268039825920. Its totient is φ = 8311907457288.

The previous prime is 19400403649261. The next prime is 19400403649387. The reversal of 19400403649382 is 28394630400491.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19400403649387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212556878 + ... + 212648129.

It is an arithmetic number, because the mean of its divisors is an integer number (2079252489120).

Almost surely, 2^{19400403649382} is an apocalyptic number.

19400403649382 is a deficient number, since it is larger than the sum of its proper divisors (13867636176538).

19400403649382 is a wasteful number, since it uses less digits than its factorization.

19400403649382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425208275.

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 19400403649382 in words is "nineteen trillion, four hundred billion, four hundred three million, six hundred forty-nine thousand, three hundred eighty-two".