18190249 has 16 divisors (see below), whose sum is σ = 22778496. Its totient is φ = 14112000.

The previous prime is 18190241. The next prime is 18190259. The reversal of 18190249 is 94209181.

It is not a de Polignac number, because 18190249 - 2³ = 18190241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18190241) 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 15 ways as a sum of consecutive naturals, for example, 25599 + ... + 26299.

It is an arithmetic number, because the mean of its divisors is an integer number (1423656).

Almost surely, 2^18190249 is an apocalyptic number.

It is an amenable number.

18190249 is a deficient number, since it is larger than the sum of its proper divisors (4588247).

18190249 is a wasteful number, since it uses less digits than its factorization.

18190249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 18190249 is about 4265.0028135981. The cubic root of 18190249 is about 262.9942265740.

It can be divided in two parts, 181902 and 49, that multiplied together give a palindrome (8913198).

The spelling of 18190249 in words is "eighteen million, one hundred ninety thousand, two hundred forty-nine".