2118916 has 24 divisors (see below), whose sum is σ = 3872960. Its totient is φ = 1013472.

The previous prime is 2118889. The next prime is 2118917. The reversal of 2118916 is 6198112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2118917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15175 + ... + 15313.

2^2118916 is an apocalyptic number.

It is an amenable number.

2118916 is a deficient number, since it is larger than the sum of its proper divisors (1754044).

2118916 is a wasteful number, since it uses less digits than its factorization.

2118916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 281 counting only the distinct ones).

The product of its digits is 864, while the sum is 28.

The square root of 2118916 is about 1455.6496831312. The cubic root of 2118916 is about 128.4412667441.

The spelling of 2118916 in words is "two million, one hundred eighteen thousand, nine hundred sixteen".