18616196911 has 32 divisors (see below), whose sum is σ = 20958916608. Its totient is φ = 16419179520.

The previous prime is 18616196861. The next prime is 18616196927. The reversal of 18616196911 is 11969161681.

It is a cyclic number.

It is not a de Polignac number, because 18616196911 - 2¹⁹ = 18615672623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18616146911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10969215 + ... + 10970911.

It is an arithmetic number, because the mean of its divisors is an integer number (654966144).

Almost surely, 2^18616196911 is an apocalyptic number.

18616196911 is a deficient number, since it is larger than the sum of its proper divisors (2342719697).

18616196911 is a wasteful number, since it uses less digits than its factorization.

18616196911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071.

The product of its digits is 139968, while the sum is 49.

The spelling of 18616196911 in words is "eighteen billion, six hundred sixteen million, one hundred ninety-six thousand, nine hundred eleven".