1840405104 has 80 divisors (see below), whose sum is σ = 5312055840. Its totient is φ = 610053120.

The previous prime is 1840405103. The next prime is 1840405109. The reversal of 1840405104 is 4015040481.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840405103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66424 + ... + 89960.

It is an arithmetic number, because the mean of its divisors is an integer number (66400698).

Almost surely, 2^1840405104 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 1840405104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2656027920).

1840405104 is an abundant number, since it is smaller than the sum of its proper divisors (3471650736).

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

1840405104 is a wasteful number, since it uses less digits than its factorization.

1840405104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23735 (or 23723 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1840405104 is about 42899.9429370250. The cubic root of 1840405104 is about 1225.4750575083.

Adding to 1840405104 its reverse (4015040481), we get a palindrome (5855445585).

The spelling of 1840405104 in words is "one billion, eight hundred forty million, four hundred five thousand, one hundred four".