18222162804 has 72 divisors (see below), whose sum is σ = 49182124992. Its totient is φ = 5674838400.

The previous prime is 18222162799. The next prime is 18222162811. The reversal of 18222162804 is 40826122281.

18222162804 is a `hidden beast` number, since 1 + 8 + 2 + 2 + 21 + 628 + 0 + 4 = 666.

It is a super-3 number, since 3×18222162804³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220297 + ... + 291504.

Almost surely, 2^18222162804 is an apocalyptic number.

It is an amenable number.

18222162804 is an abundant number, since it is smaller than the sum of its proper divisors (30959962188).

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

18222162804 is a wasteful number, since it uses less digits than its factorization.

18222162804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511877 (or 511872 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

It can be divided in two parts, 182221 and 62804, that added together give a square (245025 = 495²).

The spelling of 18222162804 in words is "eighteen billion, two hundred twenty-two million, one hundred sixty-two thousand, eight hundred four".