18843113871 has 12 divisors (see below), whose sum is σ = 28818880272. Its totient is φ = 11823130176.

The previous prime is 18843113867. The next prime is 18843113879. The reversal of 18843113871 is 17831134881.

18843113871 is a `hidden beast` number, since 1 + 88 + 431 + 138 + 7 + 1 = 666.

It is not a de Polignac number, because 18843113871 - 2² = 18843113867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18843113879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61578651 + ... + 61578956.

It is an arithmetic number, because the mean of its divisors is an integer number (2401573356).

Almost surely, 2^18843113871 is an apocalyptic number.

18843113871 is a deficient number, since it is larger than the sum of its proper divisors (9975766401).

18843113871 is a wasteful number, since it uses less digits than its factorization.

18843113871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123157630 (or 123157627 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The spelling of 18843113871 in words is "eighteen billion, eight hundred forty-three million, one hundred thirteen thousand, eight hundred seventy-one".