18280149 has 8 divisors (see below), whose sum is σ = 24707712. Its totient is φ = 12019680.

The previous prime is 18280099. The next prime is 18280159. The reversal of 18280149 is 94108281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18280149 - 2⁹ = 18279637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18280159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41517 + ... + 41954.

It is an arithmetic number, because the mean of its divisors is an integer number (3088464).

Almost surely, 2^18280149 is an apocalyptic number.

It is an amenable number.

18280149 is a deficient number, since it is larger than the sum of its proper divisors (6427563).

18280149 is an equidigital number, since it uses as much as digits as its factorization.

18280149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83547.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 18280149 is about 4275.5290900659. The cubic root of 18280149 is about 263.4267721963.

The spelling of 18280149 in words is "eighteen million, two hundred eighty thousand, one hundred forty-nine".