18428041650 has 144 divisors (see below), whose sum is σ = 49171674240. Its totient is φ = 4565683200.

The previous prime is 18428041649. The next prime is 18428041663. The reversal of 18428041650 is 5614082481.

It is a junction number, because it is equal to n+sod(n) for n = 18428041599 and 18428041608.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3421960 + ... + 3427340.

It is an arithmetic number, because the mean of its divisors is an integer number (341469960).

Almost surely, 2^18428041650 is an apocalyptic number.

18428041650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18428041650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24585837120).

18428041650 is an abundant number, since it is smaller than the sum of its proper divisors (30743632590).

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

18428041650 is a wasteful number, since it uses less digits than its factorization.

18428041650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5509 (or 5487 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 18428041650 in words is "eighteen billion, four hundred twenty-eight million, forty-one thousand, six hundred fifty".