2118897 has 24 divisors (see below), whose sum is σ = 3538080. Its totient is φ = 1207680.

The previous prime is 2118889. The next prime is 2118917. The reversal of 2118897 is 7988112.

It is not a de Polignac number, because 2118897 - 2³ = 2118889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2118877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1054 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (147420).

2^2118897 is an apocalyptic number.

It is an amenable number.

2118897 is a deficient number, since it is larger than the sum of its proper divisors (1419183).

2118897 is a wasteful number, since it uses less digits than its factorization.

2118897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293 (or 1290 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 2118897 is about 1455.6431568211. The cubic root of 2118897 is about 128.4408828384.

The spelling of 2118897 in words is "two million, one hundred eighteen thousand, eight hundred ninety-seven".