18862611911 has 16 divisors (see below), whose sum is σ = 22168648320. Its totient is φ = 15822781920.

The previous prime is 18862611863. The next prime is 18862611913. The reversal of 18862611911 is 11911626881.

It is a de Polignac number, because none of the positive numbers 2^k-18862611911 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18862611913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377300 + ... + 424358.

It is an arithmetic number, because the mean of its divisors is an integer number (1385540520).

Almost surely, 2^18862611911 is an apocalyptic number.

18862611911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18862611911 is a deficient number, since it is larger than the sum of its proper divisors (3306036409).

18862611911 is a wasteful number, since it uses less digits than its factorization.

18862611911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49886.

The product of its digits is 41472, while the sum is 44.

The spelling of 18862611911 in words is "eighteen billion, eight hundred sixty-two million, six hundred eleven thousand, nine hundred eleven".