193914616817 has 8 divisors (see below), whose sum is σ = 200082118656. Its totient is φ = 187832184192.

The previous prime is 193914616813. The next prime is 193914616859. The reversal of 193914616817 is 718616419391.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 193914616817 - 2² = 193914616813 is a prime.

It is a super-2 number, since 2×193914616817² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193914616811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21262673 + ... + 21271790.

It is an arithmetic number, because the mean of its divisors is an integer number (25010264832).

Almost surely, 2^193914616817 is an apocalyptic number.

It is an amenable number.

193914616817 is a deficient number, since it is larger than the sum of its proper divisors (6167501839).

193914616817 is an equidigital number, since it uses as much as digits as its factorization.

193914616817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42534607.

The product of its digits is 1959552, while the sum is 56.

The spelling of 193914616817 in words is "one hundred ninety-three billion, nine hundred fourteen million, six hundred sixteen thousand, eight hundred seventeen".