1820366226 has 24 divisors (see below), whose sum is σ = 4507573824. Its totient is φ = 520104600.

The previous prime is 1820366189. The next prime is 1820366243. The reversal of 1820366226 is 6226630281.

1820366226 is a `hidden beast` number, since 1 + 8 + 20 + 3 + 6 + 622 + 6 = 666.

It is a super-2 number, since 2×1820366226² = 6627466393522966152, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7223550 + ... + 7223801.

It is an arithmetic number, because the mean of its divisors is an integer number (187815576).

Almost surely, 2^1820366226 is an apocalyptic number.

1820366226 is an abundant number, since it is smaller than the sum of its proper divisors (2687207598).

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

1820366226 is a wasteful number, since it uses less digits than its factorization.

1820366226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14447366 (or 14447363 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1820366226 is about 42665.7500344246. The cubic root of 1820366226 is about 1221.0110372946.

The spelling of 1820366226 in words is "one billion, eight hundred twenty million, three hundred sixty-six thousand, two hundred twenty-six".