18596197117 has 4 divisors (see below), whose sum is σ = 18766804540. Its totient is φ = 18425589696.

The previous prime is 18596197097. The next prime is 18596197163. The reversal of 18596197117 is 71179169581.

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 6498616996 + 12097580121 = 80614^2 + 109989^2 .

It is a cyclic number.

It is not a de Polignac number, because 18596197117 - 2¹⁹ = 18595672829 is a prime.

It is a super-2 number, since 2×18596197117² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18596197177) 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, 85303548 + ... + 85303765.

It is an arithmetic number, because the mean of its divisors is an integer number (4691701135).

Almost surely, 2^18596197117 is an apocalyptic number.

It is an amenable number.

18596197117 is a deficient number, since it is larger than the sum of its proper divisors (170607423).

18596197117 is a wasteful number, since it uses less digits than its factorization.

18596197117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170607422.

The product of its digits is 952560, while the sum is 55.

The spelling of 18596197117 in words is "eighteen billion, five hundred ninety-six million, one hundred ninety-seven thousand, one hundred seventeen".