1999452384 has 192 divisors, whose sum is σ = 6338304000. Its totient is φ = 610882560.

The previous prime is 1999452383. The next prime is 1999452419. The reversal of 1999452384 is 4832549991.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1999452384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999452383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506932 + ... + 510860.

It is an arithmetic number, because the mean of its divisors is an integer number (33012000).

Almost surely, 2^1999452384 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 1999452384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3169152000).

1999452384 is an abundant number, since it is smaller than the sum of its proper divisors (4338851616).

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

1999452384 is a wasteful number, since it uses less digits than its factorization.

1999452384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998 (or 3984 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 1999452384 is about 44715.2365978309. The cubic root of 1999452384 is about 1259.8060472437.

The spelling of 1999452384 in words is "one billion, nine hundred ninety-nine million, four hundred fifty-two thousand, three hundred eighty-four".