18871583211 has 12 divisors (see below), whose sum is σ = 29355796288. Its totient is φ = 11613281904.

The previous prime is 18871583201. The next prime is 18871583231. The reversal of 18871583211 is 11238517881.

It is not a de Polignac number, because 18871583211 - 2¹⁰ = 18871582187 is a prime.

It is a super-2 number, since 2×18871583211² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18871583201) 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 11 ways as a sum of consecutive naturals, for example, 80647675 + ... + 80647908.

Almost surely, 2^18871583211 is an apocalyptic number.

18871583211 is a deficient number, since it is larger than the sum of its proper divisors (10484213077).

18871583211 is a wasteful number, since it uses less digits than its factorization.

18871583211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161295602 (or 161295599 counting only the distinct ones).

The product of its digits is 107520, while the sum is 45.

The spelling of 18871583211 in words is "eighteen billion, eight hundred seventy-one million, five hundred eighty-three thousand, two hundred eleven".