19408189632 has 56 divisors (see below), whose sum is σ = 55300906416. Its totient is φ = 5971749888.

The previous prime is 19408189601. The next prime is 19408189637. The reversal of 19408189632 is 23698180491.

It is not an unprimeable number, because it can be changed into a prime (19408189637) 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 7 ways as a sum of consecutive naturals, for example, 3885363 + ... + 3890354.

It is an arithmetic number, because the mean of its divisors is an integer number (987516186).

Almost surely, 2^19408189632 is an apocalyptic number.

19408189632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19408189632 is an abundant number, since it is smaller than the sum of its proper divisors (35892716784).

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

19408189632 is a wasteful number, since it uses less digits than its factorization.

19408189632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775745 (or 7775735 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 19408189632 in words is "nineteen billion, four hundred eight million, one hundred eighty-nine thousand, six hundred thirty-two".