1994803380 has 54 divisors (see below), whose sum is σ = 6052721766. Its totient is φ = 531787776.

The previous prime is 1994803379. The next prime is 1994803397. The reversal of 1994803380 is 833084991.

1994803380 is a `hidden beast` number, since 1 + 99 + 480 + 3 + 3 + 80 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 87385104 + 1907418276 = 9348^2 + 43674^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 597556 + ... + 600884.

Almost surely, 2^1994803380 is an apocalyptic number.

1994803380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1994803380 is an abundant number, since it is smaller than the sum of its proper divisors (4057918386).

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

1994803380 is an equidigital number, since it uses as much as digits as its factorization.

1994803380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673 (or 3339 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1994803380 is about 44663.2217825808. The cubic root of 1994803380 is about 1258.8288815963.

Multiplying 1994803380 by its sum of digits (45), we get a square (89766152100 = 299610²).

1994803380 divided by its sum of digits (45) gives a square (44328964 = 6658²).

The spelling of 1994803380 in words is "one billion, nine hundred ninety-four million, eight hundred three thousand, three hundred eighty".