19619509936 has 40 divisors (see below), whose sum is σ = 41312477360. Its totient is φ = 8972073216.

The previous prime is 19619509909. The next prime is 19619509967. The reversal of 19619509936 is 63990591691.

It is an unprimeable number.

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, 410010 + ... + 455353.

It is an arithmetic number, because the mean of its divisors is an integer number (1032811934).

Almost surely, 2^19619509936 is an apocalyptic number.

19619509936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19619509936 is an abundant number, since it is smaller than the sum of its proper divisors (21692967424).

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

19619509936 is a wasteful number, since it uses less digits than its factorization.

19619509936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865493 (or 865487 counting only the distinct ones).

The product of its (nonzero) digits is 3542940, while the sum is 58.

The spelling of 19619509936 in words is "nineteen billion, six hundred nineteen million, five hundred nine thousand, nine hundred thirty-six".