18306166050 has 120 divisors (see below), whose sum is σ = 51236844516. Its totient is φ = 4845864960.

The previous prime is 18306166031. The next prime is 18306166079. The reversal of 18306166050 is 5066160381.

It is a happy number.

18306166050 is a `hidden beast` number, since 1 + 8 + 30 + 6 + 16 + 605 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 2985420321 + 15320745729 = 54639^2 + 123777^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18306165996 and 18306166014.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 538354 + ... + 571346.

Almost surely, 2^18306166050 is an apocalyptic number.

18306166050 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 18306166050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25618422258).

18306166050 is an abundant number, since it is smaller than the sum of its proper divisors (32930678466).

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

18306166050 is a wasteful number, since it uses less digits than its factorization.

18306166050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33154 (or 33140 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 18306166050 in words is "eighteen billion, three hundred six million, one hundred sixty-six thousand, fifty".