18830249 has 4 divisors (see below), whose sum is σ = 18945936. Its totient is φ = 18714564.

The previous prime is 18830243. The next prime is 18830257. The reversal of 18830249 is 94203881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18830249 - 2⁴ = 18830233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18830243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57599 + ... + 57924.

It is an arithmetic number, because the mean of its divisors is an integer number (4736484).

Almost surely, 2^18830249 is an apocalyptic number.

It is an amenable number.

18830249 is a deficient number, since it is larger than the sum of its proper divisors (115687).

18830249 is a wasteful number, since it uses less digits than its factorization.

18830249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115686.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 18830249 is about 4339.3834815559. The cubic root of 18830249 is about 266.0431130300.

The spelling of 18830249 in words is "eighteen million, eight hundred thirty thousand, two hundred forty-nine".