1806039040 has 96 divisors (see below), whose sum is σ = 4667120640. Its totient is φ = 666796032.

The previous prime is 1806039019. The next prime is 1806039041. The reversal of 1806039040 is 409306081.

It is a junction number, because it is equal to n+sod(n) for n = 1806038993 and 1806039011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806039041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126337 + ... + 139903.

It is an arithmetic number, because the mean of its divisors is an integer number (48615840).

Almost surely, 2^1806039040 is an apocalyptic number.

1806039040 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 1806039040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2333560320).

1806039040 is an abundant number, since it is smaller than the sum of its proper divisors (2861081600).

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

1806039040 is a wasteful number, since it uses less digits than its factorization.

1806039040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13607 (or 13587 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1806039040 is about 42497.5180451753. The cubic root of 1806039040 is about 1217.7992754161.

The spelling of 1806039040 in words is "one billion, eight hundred six million, thirty-nine thousand, forty".