18347539876 has 6 divisors (see below), whose sum is σ = 32108194790. Its totient is φ = 9173769936.

The previous prime is 18347539871. The next prime is 18347540023. The reversal of 18347539876 is 67893574381.

It can be written as a sum of positive squares in only one way, i.e., 9721960000 + 8625579876 = 98600^2 + 92874^2 .

It is not an unprimeable number, because it can be changed into a prime (18347539871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2293442481 + ... + 2293442488.

Almost surely, 2^18347539876 is an apocalyptic number.

It is an amenable number.

18347539876 is a deficient number, since it is larger than the sum of its proper divisors (13760654914).

18347539876 is a wasteful number, since it uses less digits than its factorization.

18347539876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586884973 (or 4586884971 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 61.

The spelling of 18347539876 in words is "eighteen billion, three hundred forty-seven million, five hundred thirty-nine thousand, eight hundred seventy-six".