18182957 has 8 divisors (see below), whose sum is σ = 20213760. Its totient is φ = 16242480.

The previous prime is 18182951. The next prime is 18182963. The reversal of 18182957 is 75928181.

It is an interprime number because it is at equal distance from previous prime (18182951) and next prime (18182963).

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 18182957 - 2¹² = 18178861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18182951) 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, 22157 + ... + 22962.

It is an arithmetic number, because the mean of its divisors is an integer number (2526720).

Almost surely, 2^18182957 is an apocalyptic number.

It is an amenable number.

18182957 is a deficient number, since it is larger than the sum of its proper divisors (2030803).

18182957 is a wasteful number, since it uses less digits than its factorization.

18182957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45163.

The product of its digits is 40320, while the sum is 41.

The square root of 18182957 is about 4264.1478632899. The cubic root of 18182957 is about 262.9590793510.

It can be divided in two parts, 181 and 82957, that added together give a palindrome (83138).

The spelling of 18182957 in words is "eighteen million, one hundred eighty-two thousand, nine hundred fifty-seven".