18982117 has 24 divisors (see below), whose sum is σ = 24250688. Its totient is φ = 14541120.

The previous prime is 18982091. The next prime is 18982127. The reversal of 18982117 is 71128981.

It is not a de Polignac number, because 18982117 - 2¹⁵ = 18949349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18982127) 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 23 ways as a sum of consecutive naturals, for example, 61678 + ... + 61984.

Almost surely, 2^18982117 is an apocalyptic number.

It is an amenable number.

18982117 is a deficient number, since it is larger than the sum of its proper divisors (5268571).

18982117 is a wasteful number, since it uses less digits than its factorization.

18982117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 398 counting only the distinct ones).

The product of its digits is 8064, while the sum is 37.

The square root of 18982117 is about 4356.8471398478. The cubic root of 18982117 is about 266.7564210025.

The spelling of 18982117 in words is "eighteen million, nine hundred eighty-two thousand, one hundred seventeen".