12919033818 has 32 divisors (see below), whose sum is σ = 29102246400. Its totient is φ = 4247352288.

The previous prime is 12919033817. The next prime is 12919033819. The reversal of 12919033818 is 81833091921.

12919033818 is a `hidden beast` number, since 129 + 190 + 338 + 1 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (12919033817) and next prime (12919033819).

It is not an unprimeable number, because it can be changed into a prime (12919033817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1634698 + ... + 1642581.

It is an arithmetic number, because the mean of its divisors is an integer number (909445200).

Almost surely, 2^12919033818 is an apocalyptic number.

12919033818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12919033818 is an abundant number, since it is smaller than the sum of its proper divisors (16183212582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12919033818 is a wasteful number, since it uses less digits than its factorization.

12919033818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277363 (or 3277357 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 12919033818 in words is "twelve billion, nine hundred nineteen million, thirty-three thousand, eight hundred eighteen".