184421220489 has 24 divisors (see below), whose sum is σ = 290657394144. Its totient is φ = 111749568000.

The previous prime is 184421220481. The next prime is 184421220523. The reversal of 184421220489 is 984022124481.

184421220489 is a `hidden beast` number, since 1 + 8 + 4 + 42 + 122 + 0 + 489 = 666.

It is not a de Polignac number, because 184421220489 - 2³ = 184421220481 is a prime.

It is a super-2 number, since 2×184421220489² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (184421220481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367474 + ... + 709844.

It is an arithmetic number, because the mean of its divisors is an integer number (12110724756).

Almost surely, 2^184421220489 is an apocalyptic number.

It is an amenable number.

184421220489 is a deficient number, since it is larger than the sum of its proper divisors (106236173655).

184421220489 is a wasteful number, since it uses less digits than its factorization.

184421220489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347829 (or 347826 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The spelling of 184421220489 in words is "one hundred eighty-four billion, four hundred twenty-one million, two hundred twenty thousand, four hundred eighty-nine".