18180050 has 48 divisors (see below), whose sum is σ = 39045120. Its totient is φ = 6168960.

The previous prime is 18179983. The next prime is 18180059. The reversal of 18180050 is 5008181.

It is a junction number, because it is equal to n+sod(n) for n = 18179998 and 18180025.

It is not an unprimeable number, because it can be changed into a prime (18180059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44246 + ... + 44654.

It is an arithmetic number, because the mean of its divisors is an integer number (813440).

Almost surely, 2^18180050 is an apocalyptic number.

18180050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18180050 is an abundant number, since it is smaller than the sum of its proper divisors (20865070).

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

18180050 is a wasteful number, since it uses less digits than its factorization.

18180050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 18180050 is about 4263.8069843744. The cubic root of 18180050 is about 262.9450650777.

The spelling of 18180050 in words is "eighteen million, one hundred eighty thousand, fifty".