18340869966 has 16 divisors (see below), whose sum is σ = 36692164944. Its totient is φ = 6111885824.

The previous prime is 18340869961. The next prime is 18340869983. The reversal of 18340869966 is 66996804381.

It is a super-2 number, since 2×18340869966² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18340869961) 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, 411411 + ... + 453806.

It is an arithmetic number, because the mean of its divisors is an integer number (2293260309).

Almost surely, 2^18340869966 is an apocalyptic number.

18340869966 is an abundant number, since it is smaller than the sum of its proper divisors (18351294978).

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

18340869966 is a wasteful number, since it uses less digits than its factorization.

18340869966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868755.

The product of its (nonzero) digits is 13436928, while the sum is 60.

The spelling of 18340869966 in words is "eighteen billion, three hundred forty million, eight hundred sixty-nine thousand, nine hundred sixty-six".