19117117 has 8 divisors (see below), whose sum is σ = 20097216. Its totient is φ = 18149472.

The previous prime is 19117093. The next prime is 19117127. The reversal of 19117117 is 71171191.

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 19117117 - 2¹¹ = 19115069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19117127) 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, 118 + ... + 6184.

It is an arithmetic number, because the mean of its divisors is an integer number (2512152).

Almost surely, 2^19117117 is an apocalyptic number.

It is an amenable number.

19117117 is a deficient number, since it is larger than the sum of its proper divisors (980099).

19117117 is a wasteful number, since it uses less digits than its factorization.

19117117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6227.

The product of its digits is 441, while the sum is 28.

The square root of 19117117 is about 4372.3125460104. The cubic root of 19117117 is about 267.3873144613.

The spelling of 19117117 in words is "nineteen million, one hundred seventeen thousand, one hundred seventeen".