1890732384 has 144 divisors (see below), whose sum is σ = 5832524880. Its totient is φ = 578641920.

The previous prime is 1890732379. The next prime is 1890732391. The reversal of 1890732384 is 4832370981.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

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, 196027 + ... + 205445.

It is an arithmetic number, because the mean of its divisors is an integer number (40503645).

Almost surely, 2^1890732384 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 1890732384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2916262440).

1890732384 is an abundant number, since it is smaller than the sum of its proper divisors (3941792496).

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

1890732384 is a wasteful number, since it uses less digits than its factorization.

1890732384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9493 (or 9482 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1890732384 is about 43482.5526389608. The cubic root of 1890732384 is about 1236.5452710865.

The spelling of 1890732384 in words is "one billion, eight hundred ninety million, seven hundred thirty-two thousand, three hundred eighty-four".