19416231605 has 16 divisors (see below), whose sum is σ = 23559210624. Its totient is φ = 15360770880.

The previous prime is 19416231599. The next prime is 19416231649. The reversal of 19416231605 is 50613261491.

It is not a de Polignac number, because 19416231605 - 2⁸ = 19416231349 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107024 + ... + 224246.

It is an arithmetic number, because the mean of its divisors is an integer number (1472450664).

Almost surely, 2^19416231605 is an apocalyptic number.

It is an amenable number.

19416231605 is a deficient number, since it is larger than the sum of its proper divisors (4142979019).

19416231605 is a wasteful number, since it uses less digits than its factorization.

19416231605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117596.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 19416231605 in words is "nineteen billion, four hundred sixteen million, two hundred thirty-one thousand, six hundred five".