1842221164 has 12 divisors (see below), whose sum is σ = 3684442384. Its totient is φ = 789523344.

The previous prime is 1842221149. The next prime is 1842221189. The reversal of 1842221164 is 4611222481.

1842221164 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32896779 + ... + 32896834.

Almost surely, 2^1842221164 is an apocalyptic number.

1842221164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1842221164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1842221164 is a wasteful number, since it uses less digits than its factorization.

1842221164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65793624 (or 65793622 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 1842221164 is about 42921.1039466601. The cubic root of 1842221164 is about 1225.8780131034.

The spelling of 1842221164 in words is "one billion, eight hundred forty-two million, two hundred twenty-one thousand, one hundred sixty-four".