182209861866 has 32 divisors (see below), whose sum is σ = 372607750080. Its totient is φ = 59380049664.

The previous prime is 182209861817. The next prime is 182209861921. The reversal of 182209861866 is 668168902281.

It is a happy number.

It is a super-2 number, since 2×182209861866² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 922351 + ... + 1102338.

It is an arithmetic number, because the mean of its divisors is an integer number (11643992190).

Almost surely, 2^182209861866 is an apocalyptic number.

182209861866 is an abundant number, since it is smaller than the sum of its proper divisors (190397888214).

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

182209861866 is a wasteful number, since it uses less digits than its factorization.

182209861866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025030.

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 182209861866 in words is "one hundred eighty-two billion, two hundred nine million, eight hundred sixty-one thousand, eight hundred sixty-six".