1890380304 has 120 divisors (see below), whose sum is σ = 5563876032. Its totient is φ = 597991680.

The previous prime is 1890380293. The next prime is 1890380339. The reversal of 1890380304 is 4030830981.

It is a super-2 number, since 2×1890380304² = 7147075387502264832, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431694 + ... + 436050.

Almost surely, 2^1890380304 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 1890380304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2781938016).

1890380304 is an abundant number, since it is smaller than the sum of its proper divisors (3673495728).

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

1890380304 is a wasteful number, since it uses less digits than its factorization.

1890380304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4525 (or 4516 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1890380304 is about 43478.5039301032. The cubic root of 1890380304 is about 1236.4685124912.

The spelling of 1890380304 in words is "one billion, eight hundred ninety million, three hundred eighty thousand, three hundred four".