18257141 has 8 divisors (see below), whose sum is σ = 20994624. Its totient is φ = 15552000.

The previous prime is 18257131. The next prime is 18257159. The reversal of 18257141 is 14175281.

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

It is a cyclic number.

It is not a de Polignac number, because 18257141 - 2¹⁴ = 18240757 is a prime.

It is a super-4 number, since 4×18257141⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18257111) 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 7 ways as a sum of consecutive naturals, for example, 6860 + ... + 9141.

It is an arithmetic number, because the mean of its divisors is an integer number (2624328).

Almost surely, 2^18257141 is an apocalyptic number.

It is an amenable number.

18257141 is a deficient number, since it is larger than the sum of its proper divisors (2737483).

18257141 is a wasteful number, since it uses less digits than its factorization.

18257141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16171.

The product of its digits is 2240, while the sum is 29.

The square root of 18257141 is about 4272.8375817482. The cubic root of 18257141 is about 263.3162065808.

The spelling of 18257141 in words is "eighteen million, two hundred fifty-seven thousand, one hundred forty-one".