1840243860 has 672 divisors, whose sum is σ = 7609378560. Its totient is φ = 362797056.

The previous prime is 1840243799. The next prime is 1840243883. The reversal of 1840243860 is 683420481.

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 223 ways as a sum of consecutive naturals, for example, 25208784 + ... + 25208856.

It is an arithmetic number, because the mean of its divisors is an integer number (11323480).

Almost surely, 2^1840243860 is an apocalyptic number.

1840243860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1840243860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3804689280).

1840243860 is an abundant number, since it is smaller than the sum of its proper divisors (5769134700).

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

1840243860 is a wasteful number, since it uses less digits than its factorization.

1840243860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 122 counting only the distinct ones).

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

The square root of 1840243860 is about 42898.0635926611. The cubic root of 1840243860 is about 1225.4392671505.

The spelling of 1840243860 in words is "one billion, eight hundred forty million, two hundred forty-three thousand, eight hundred sixty".