1994574384 has 120 divisors (see below), whose sum is σ = 6133982400. Its totient is φ = 600001920.

The previous prime is 1994574367. The next prime is 1994574397. The reversal of 1994574384 is 4834754991.

1994574384 is a `hidden beast` number, since 199 + 4 + 5 + 74 + 384 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1994574384.

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, 215647 + ... + 224705.

It is an arithmetic number, because the mean of its divisors is an integer number (51116520).

Almost surely, 2^1994574384 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 1994574384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3066991200).

1994574384 is an abundant number, since it is smaller than the sum of its proper divisors (4139408016).

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

1994574384 is a wasteful number, since it uses less digits than its factorization.

1994574384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223 (or 9214 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1994574384 is about 44660.6581232297. The cubic root of 1994574384 is about 1258.7807101303.

It can be divided in two parts, 199457 and 4384, that added together give a triangular number (203841 = T₆₃₈).

The spelling of 1994574384 in words is "one billion, nine hundred ninety-four million, five hundred seventy-four thousand, three hundred eighty-four".