19864339795 has 8 divisors (see below), whose sum is σ = 23844609360. Its totient is φ = 15886537440.

The previous prime is 19864339787. The next prime is 19864339801. The reversal of 19864339795 is 59793346891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19864339795 - 2³ = 19864339787 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599041 + ... + 631330.

It is an arithmetic number, because the mean of its divisors is an integer number (2980576170).

Almost surely, 2^19864339795 is an apocalyptic number.

19864339795 is a deficient number, since it is larger than the sum of its proper divisors (3980269565).

19864339795 is a wasteful number, since it uses less digits than its factorization.

19864339795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233605.

The product of its digits is 44089920, while the sum is 64.

The spelling of 19864339795 in words is "nineteen billion, eight hundred sixty-four million, three hundred thirty-nine thousand, seven hundred ninety-five".