16860007818 has 16 divisors (see below), whose sum is σ = 37466684160. Its totient is φ = 5620002588.

The previous prime is 16860007799. The next prime is 16860007841. The reversal of 16860007818 is 81870006861.

It is a super-2 number, since 2×16860007818² (a number of 21 digits) contains 22 as substring.

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, 156111130 + ... + 156111237.

It is an arithmetic number, because the mean of its divisors is an integer number (2341667760).

Almost surely, 2^16860007818 is an apocalyptic number.

16860007818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16860007818 is an abundant number, since it is smaller than the sum of its proper divisors (20606676342).

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

16860007818 is a wasteful number, since it uses less digits than its factorization.

16860007818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312222378 (or 312222372 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 16860007818 in words is "sixteen billion, eight hundred sixty million, seven thousand, eight hundred eighteen".