19276421472 has 480 divisors, whose sum is σ = 71922090240. Its totient is φ = 4918993920.

The previous prime is 19276421459. The next prime is 19276421473. The reversal of 19276421472 is 27412467291.

19276421472 is a `hidden beast` number, since 1 + 92 + 76 + 4 + 21 + 472 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19276421473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11774638 + ... + 11776274.

It is an arithmetic number, because the mean of its divisors is an integer number (149837688).

Almost surely, 2^19276421472 is an apocalyptic number.

19276421472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19276421472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35961045120).

19276421472 is an abundant number, since it is smaller than the sum of its proper divisors (52645668768).

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

19276421472 is a wasteful number, since it uses less digits than its factorization.

19276421472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736 (or 1719 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The spelling of 19276421472 in words is "nineteen billion, two hundred seventy-six million, four hundred twenty-one thousand, four hundred seventy-two".