1861336224 has 216 divisors, whose sum is σ = 6009284736. Its totient is φ = 545529600.

The previous prime is 1861336223. The next prime is 1861336231. The reversal of 1861336224 is 4226331681.

1861336224 is a `hidden beast` number, since 1 + 8 + 613 + 36 + 2 + 2 + 4 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861336223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1079427 + ... + 1081149.

Almost surely, 2^1861336224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1861336224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3004642368).

1861336224 is an abundant number, since it is smaller than the sum of its proper divisors (4147948512).

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

1861336224 is a wasteful number, since it uses less digits than its factorization.

1861336224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792 (or 1770 counting only the distinct ones).

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

The square root of 1861336224 is about 43143.2060004817. The cubic root of 1861336224 is about 1230.1033742188.

The spelling of 1861336224 in words is "one billion, eight hundred sixty-one million, three hundred thirty-six thousand, two hundred twenty-four".