18347976827 has 8 divisors (see below), whose sum is σ = 18585475920. Its totient is φ = 18111174400.

The previous prime is 18347976821. The next prime is 18347976883. The reversal of 18347976827 is 72867974381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18347976827 - 2⁸ = 18347976571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18347976827.

It is not an unprimeable number, because it can be changed into a prime (18347976821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121049 + ... + 226602.

It is an arithmetic number, because the mean of its divisors is an integer number (2323184490).

Almost surely, 2^18347976827 is an apocalyptic number.

18347976827 is a deficient number, since it is larger than the sum of its proper divisors (237499093).

18347976827 is an equidigital number, since it uses as much as digits as its factorization.

18347976827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348333.

The product of its digits is 28449792, while the sum is 62.

The spelling of 18347976827 in words is "eighteen billion, three hundred forty-seven million, nine hundred seventy-six thousand, eight hundred twenty-seven".