18130650 has 24 divisors (see below), whose sum is σ = 44964384. Its totient is φ = 4834800.

The previous prime is 18130627. The next prime is 18130657. The reversal of 18130650 is 5603181.

It is a self number, because there is not a number n which added to its sum of digits gives 18130650.

It is not an unprimeable number, because it can be changed into a prime (18130657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60286 + ... + 60585.

It is an arithmetic number, because the mean of its divisors is an integer number (1873516).

Almost surely, 2^18130650 is an apocalyptic number.

18130650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18130650 is an abundant number, since it is smaller than the sum of its proper divisors (26833734).

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

18130650 is a wasteful number, since it uses less digits than its factorization.

18130650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120886 (or 120881 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 18130650 is about 4258.0100986259. The cubic root of 18130650 is about 262.7066852915.

The spelling of 18130650 in words is "eighteen million, one hundred thirty thousand, six hundred fifty".