19215039472 has 40 divisors (see below), whose sum is σ = 38532957840. Its totient is φ = 9271395840.

The previous prime is 19215039457. The next prime is 19215039479. The reversal of 19215039472 is 27493051291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19215039479) 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 7 ways as a sum of consecutive naturals, for example, 979068 + ... + 998500.

It is an arithmetic number, because the mean of its divisors is an integer number (963323946).

Almost surely, 2^19215039472 is an apocalyptic number.

It is an amenable number.

19215039472 is an abundant number, since it is smaller than the sum of its proper divisors (19317918368).

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

19215039472 is a wasteful number, since it uses less digits than its factorization.

19215039472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21601 (or 21595 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 19215039472 in words is "nineteen billion, two hundred fifteen million, thirty-nine thousand, four hundred seventy-two".