1806244380 has 48 divisors (see below), whose sum is σ = 5619428640. Its totient is φ = 481665024.

The previous prime is 1806244379. The next prime is 1806244393. The reversal of 1806244380 is 834426081.

1806244380 is a `hidden beast` number, since 1 + 80 + 62 + 443 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1671909 + ... + 1672988.

It is an arithmetic number, because the mean of its divisors is an integer number (117071430).

Almost surely, 2^1806244380 is an apocalyptic number.

1806244380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1806244380 is an abundant number, since it is smaller than the sum of its proper divisors (3813184260).

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

1806244380 is a wasteful number, since it uses less digits than its factorization.

1806244380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3344915 (or 3344907 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1806244380 is about 42499.9338823015. The cubic root of 1806244380 is about 1217.8454267674.

The spelling of 1806244380 in words is "one billion, eight hundred six million, two hundred forty-four thousand, three hundred eighty".