1840940424 has 192 divisors, whose sum is σ = 5396751360. Its totient is φ = 565488000.

The previous prime is 1840940407. The next prime is 1840940429. The reversal of 1840940424 is 4240490481.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (1840940429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7334299 + ... + 7334549.

It is an arithmetic number, because the mean of its divisors is an integer number (28108080).

Almost surely, 2^1840940424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1840940424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2698375680).

1840940424 is an abundant number, since it is smaller than the sum of its proper divisors (3555810936).

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

1840940424 is a wasteful number, since it uses less digits than its factorization.

1840940424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 425 counting only the distinct ones).

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

The square root of 1840940424 is about 42906.1816525311. The cubic root of 1840940424 is about 1225.5938642701.

The spelling of 1840940424 in words is "one billion, eight hundred forty million, nine hundred forty thousand, four hundred twenty-four".