2118630 has 16 divisors (see below), whose sum is σ = 5084784. Its totient is φ = 564960.

The previous prime is 2118629. The next prime is 2118643. The reversal of 2118630 is 368112.

It is a junction number, because it is equal to n+sod(n) for n = 2118597 and 2118606.

It is a congruent number.

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, 35281 + ... + 35340.

It is an arithmetic number, because the mean of its divisors is an integer number (317799).

2^2118630 is an apocalyptic number.

2118630 is an abundant number, since it is smaller than the sum of its proper divisors (2966154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2118630 is a wasteful number, since it uses less digits than its factorization.

2118630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70631.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2118630 is about 1455.5514418941. The cubic root of 2118630 is about 128.4354877113.

The spelling of 2118630 in words is "two million, one hundred eighteen thousand, six hundred thirty".