18299457 has 12 divisors (see below), whose sum is σ = 28835664. Its totient is φ = 11090520.

The previous prime is 18299453. The next prime is 18299471. The reversal of 18299457 is 75499281.

It is not a de Polignac number, because 18299457 - 2² = 18299453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18299453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92323 + ... + 92520.

It is an arithmetic number, because the mean of its divisors is an integer number (2402972).

Almost surely, 2^18299457 is an apocalyptic number.

It is an amenable number.

18299457 is a deficient number, since it is larger than the sum of its proper divisors (10536207).

18299457 is a wasteful number, since it uses less digits than its factorization.

18299457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184860 (or 184857 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 18299457 is about 4277.7864603086. The cubic root of 18299457 is about 263.5194857810.

The spelling of 18299457 in words is "eighteen million, two hundred ninety-nine thousand, four hundred fifty-seven".