2118398 has 8 divisors (see below), whose sum is σ = 3263592. Its totient is φ = 1030536.

The previous prime is 2118397. The next prime is 2118419. The reversal of 2118398 is 8938112.

2118398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×2118398² = 8975220172808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2118397) 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 3 ways as a sum of consecutive naturals, for example, 14240 + ... + 14387.

It is an arithmetic number, because the mean of its divisors is an integer number (407949).

2^2118398 is an apocalyptic number.

2118398 is a deficient number, since it is larger than the sum of its proper divisors (1145194).

2118398 is a wasteful number, since it uses less digits than its factorization.

2118398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28666.

The product of its digits is 3456, while the sum is 32.

The square root of 2118398 is about 1455.4717448305. The cubic root of 2118398 is about 128.4307994425.

The spelling of 2118398 in words is "two million, one hundred eighteen thousand, three hundred ninety-eight".