14195021917 has 4 divisors (see below), whose sum is σ = 14578671196. Its totient is φ = 13811372640.

The previous prime is 14195021881. The next prime is 14195021969. The reversal of 14195021917 is 71912059141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13205227396 + 989794521 = 114914^2 + 31461^2 .

It is a cyclic number.

It is not a de Polignac number, because 14195021917 - 2²⁷ = 14060804189 is a prime.

It is a super-2 number, since 2×14195021917² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14195021917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14195021317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191824584 + ... + 191824657.

It is an arithmetic number, because the mean of its divisors is an integer number (3644667799).

Almost surely, 2^14195021917 is an apocalyptic number.

It is an amenable number.

14195021917 is a deficient number, since it is larger than the sum of its proper divisors (383649279).

14195021917 is an equidigital number, since it uses as much as digits as its factorization.

14195021917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383649278.

The product of its (nonzero) digits is 22680, while the sum is 40.

The spelling of 14195021917 in words is "fourteen billion, one hundred ninety-five million, twenty-one thousand, nine hundred seventeen".