18771161852 has 6 divisors (see below), whose sum is σ = 32849533248. Its totient is φ = 9385580924.

The previous prime is 18771161839. The next prime is 18771161873. The reversal of 18771161852 is 25816117781.

It is a junction number, because it is equal to n+sod(n) for n = 18771161797 and 18771161806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2346395228 + ... + 2346395235.

It is an arithmetic number, because the mean of its divisors is an integer number (5474922208).

Almost surely, 2^18771161852 is an apocalyptic number.

It is an amenable number.

18771161852 is a deficient number, since it is larger than the sum of its proper divisors (14078371396).

18771161852 is a wasteful number, since it uses less digits than its factorization.

18771161852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4692790467 (or 4692790465 counting only the distinct ones).

The product of its digits is 188160, while the sum is 47.

The spelling of 18771161852 in words is "eighteen billion, seven hundred seventy-one million, one hundred sixty-one thousand, eight hundred fifty-two".