12185001818 has 16 divisors (see below), whose sum is σ = 19974034080. Its totient is φ = 5528931600.

The previous prime is 12185001781. The next prime is 12185001823. The reversal of 12185001818 is 81810058121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472433 + ... + 497556.

It is an arithmetic number, because the mean of its divisors is an integer number (1248377130).

Almost surely, 2^12185001818 is an apocalyptic number.

12185001818 is a deficient number, since it is larger than the sum of its proper divisors (7789032262).

12185001818 is a wasteful number, since it uses less digits than its factorization.

12185001818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970573.

The product of its (nonzero) digits is 5120, while the sum is 35.

Adding to 12185001818 its reverse (81810058121), we get a palindrome (93995059939).

The spelling of 12185001818 in words is "twelve billion, one hundred eighty-five million, one thousand, eight hundred eighteen".