1840502040 has 128 divisors (see below), whose sum is σ = 5978024640. Its totient is φ = 450625536.

The previous prime is 1840502003. The next prime is 1840502057. The reversal of 1840502040 is 402050481.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1840502040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298024 + ... + 304136.

Almost surely, 2^1840502040 is an apocalyptic number.

1840502040 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 1840502040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2989012320).

1840502040 is an abundant number, since it is smaller than the sum of its proper divisors (4137522600).

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

1840502040 is a wasteful number, since it uses less digits than its factorization.

1840502040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6333 (or 6329 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1840502040 is about 42901.0727138611. The cubic root of 1840502040 is about 1225.4965728012.

The spelling of 1840502040 in words is "one billion, eight hundred forty million, five hundred two thousand, forty".