19378289504 has 72 divisors (see below), whose sum is σ = 45324165600. Its totient is φ = 8128248576.

The previous prime is 19378289501. The next prime is 19378289527. The reversal of 19378289504 is 40598287391.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 19378289504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19378289501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57779 + ... + 205170.

It is an arithmetic number, because the mean of its divisors is an integer number (629502300).

Almost surely, 2^19378289504 is an apocalyptic number.

19378289504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19378289504 is an abundant number, since it is smaller than the sum of its proper divisors (25945876096).

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

19378289504 is a wasteful number, since it uses less digits than its factorization.

19378289504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263020 (or 263005 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 19378289504 in words is "nineteen billion, three hundred seventy-eight million, two hundred eighty-nine thousand, five hundred four".