2118826 has 4 divisors (see below), whose sum is σ = 3178242. Its totient is φ = 1059412.

The previous prime is 2118811. The next prime is 2118833. The reversal of 2118826 is 6288112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1962801 + 156025 = 1401^2 + 395^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2118794 and 2118803.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529705 + ... + 529708.

2^2118826 is an apocalyptic number.

2118826 is a deficient number, since it is larger than the sum of its proper divisors (1059416).

2118826 is a wasteful number, since it uses less digits than its factorization.

2118826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059415.

The product of its digits is 1536, while the sum is 28.

The square root of 2118826 is about 1455.6187687715. The cubic root of 2118826 is about 128.4394482234.

It can be divided in two parts, 2 and 118826, that added together give a triangular number (118828 = T₄₈₇).

The spelling of 2118826 in words is "two million, one hundred eighteen thousand, eight hundred twenty-six".