2118634 has 16 divisors (see below), whose sum is σ = 3721536. Its totient is φ = 885600.

The previous prime is 2118629. The next prime is 2118643. The reversal of 2118634 is 4368112.

It is a super-2 number, since 2×2118634² = 8977220051912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2118599 and 2118608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1272 + ... + 2419.

It is an arithmetic number, because the mean of its divisors is an integer number (232596).

2^2118634 is an apocalyptic number.

2118634 is a deficient number, since it is larger than the sum of its proper divisors (1602902).

2118634 is a wasteful number, since it uses less digits than its factorization.

2118634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741.

The product of its digits is 1152, while the sum is 25.

The square root of 2118634 is about 1455.5528159431. The cubic root of 2118634 is about 128.4355685405.

The spelling of 2118634 in words is "two million, one hundred eighteen thousand, six hundred thirty-four".